Title: Physical Science Day Starters
1Physical Science Day Starters
25 Question Quiz.
- You are going to do an experiment on plants. You
plant 12 beans. You give them all 10 mL of water
each day, but to six of them you add 2 mL of
acetic acid. - The independent variable is
- The acetic acid d. The second six bean plants
- The 10 mL of water e. The growth of the beans
with the acid - The dependent variable is
- The acetic acid c. The second six bean plants
- b. The 10 mL of water d. The grown of the
beans with the acid - The control is
- The acetic acid c. The growth of the beans
without acid - The growth of the beans with the acid d. The
dirt the beans grow in - The constant is
- The acetic acid c. The growth of the beans
without the acid - The growth of the beans with the acid d. The
dirt the beans grow in - A bias is
- When one side wins the argument c. A
preconceived notion - A poorly done experiment d. An experiment with
two variables
3- The variable that you, as a scientist, can change
is what? - Dependent variable c. Control variable
- Independent variable d. Constant variable
- Density is found by what formula?
- Mass x Volume c. Mass Volume
- Mass Volume d. Mass - Volume
- How many grams are their in a kilogram"
- 10 c. 100
- 1,000 d. 1,000,000
- Time will generally be a
- Constant c. Independent variable
- Dependent variable d. Control
- During a fire drill
- Move in an orderly manner, out the door c. Sit
paralyzed by fear and indecision - Run as fast as you can. Some one has to be
first!!! D. Don't worry, it's just a drill - When thinking of the rules and procedures in this
room, - Don't worry. Mr. Monroe is an understanding
type c. Worry. Mr.. Monroe is just plain evil. - Follow them, and you don't need to worry d.
Always test them to see if Mr.. Monroe means it.
4- 1. On a line graph, the dependent variable goes
on the - "y" axis c. "x" axis
- Where it fits best d. Dependent variables are
used on bar charts - 2. To show the percentage of various types, one
would probably use - Line graph c. Scatter graph
- Bar graph d. Pie graph
- 3. How many meters are there in one millimeter?
- .1 c. .001
- .01 d. .0001
- 4. When plotting temperature and time,
temperature would probably be what? - Constant c. Independent variable
- Dependent variable d. Control
- 5. A scientific law is what?
- No longer even tested c. Irrefutable
- Really nothing more than a good idea d. Always
gives accurate results during testing - 6. How many degrees on a pie chart would be
shown for 125 Chihuahuas, out of a total of 989
dogs? - 12.6º c. 45.5º
- 12.5º d. 33.3º
5- What changes with the change of the independent
variable? - a. Control c. Dependent variable
- b. Constant d. Bias
- What goes on the x axis?
- a. Control c. Dependent variable
- b. Constant d. Independent variable
- What is the formula for density?
- a. Mass x Volume c. Volume Mass
- b. Mass Volume d. Volume Mass
- What is a preconcieved notion, that may influence
the way a scientist looks at an experiment. - a. Control c. Bias
- b. Independent variable d. Dependent variable
- A scientist is doing an experiment, and comparing
the amount a plant grows, when given different
amounts of sunlight, water and types of dirt.
What are the three independent variables? - a. Sunlight, dirt type and plant growth c.
Sunlight, water and dirt type - b. Water, dirt type and plant growth d. Plant
growth, water and sunlight
6Two Question Quiz.
- How many meters are there in 68.4 feet?
- _______________________________________
- What is the volume of a box that measures
- 55.4 cm x 26.9 cm x 98.2 cm?
- ________________________________________
7Two Question Quiz.
What is the volume of a box that measures 55.4 cm
x 26.9 cm x 98.2 cm?
55.4 cm x 26.9 cm x 98.2 cm 146,344 cm3
8- On a line graph, the dependent variable goes on
the - "y" axis c. "x" axis
- Where it fits best d. Dependent variables are
used on bar charts - To show the percentage of various types, one
would probably use - Line graph c. Scatter graph
- Bar graph d. Pie graph
- How many meters are there in one millimeter?
- .1 c. .001
- .01 d. .0001
- When plotting temperature and time, temperature
would probably be what? - Constant c. Independent variable
- Dependent variable d. Control
- A scientific law is what?
- No longer even tested c. Irrefutable
- Really nothing more than a good idea D. Always
gives accurate results during testing - How many degrees on a pie chart would be shown
for 125 Chihuahuas, out of a total of 989 dogs? - 45.5
9- How many kilometers are there in 567 meters?
- How many meters are there in 34.5 inches?
- There are 2 cups to a pint, 2 pints to a quart, 4
quarts in a gallon, and a gallon of a certain
liquid weights 13.5 pounds. How many cups would
there be in 45.8 pounds of the liquid?
10- Displacement can be
- Sometimes larger than distance c. Sometimes
shorter than distance - Equal to or less than distance d. Equal to or
more than distance - Velocity
- Includes stopping c. Includes direction
- Is found with speed d. Is speed AND time
- To determine speed, a reference point
- Is always needed c. Can change
- Is helpful, not ALWAYS needed d. Is needed
twice - The steepness of the slope on a time/distance
graph will indicate - Speed c. Velocity
- Time d. Distance
- A negative slope on a displacement/time graph
will indicate - Slowing down c. Coming home
- Speeding up d. Changing speed
11In what segment is the movement the
slowest? ________________________ In what
segment is the movement the fastest? _____________
____________ In what segment is there no
movement? __________________________
DISTANCE
D
B
C
A
Time
12In what segment is there constant
speed? ________________________ In what segment
is the acceleration the fastest? _________________
________ In what segment is there no
movement? __________________________
Speed
D
B
C
A
Time
13- A car accelerates from 3.5 m/s to 8.9 m/s in 17.8
seconds. What is its rate of acceleration? - 0.30 m/s c. 0.30 m/s2
- 2.0 m/s/s d. -5.4 m/s/s
- A car traveled for 2.3 hours at an average rate
of 45.7 miles per hour. How far did it travel? - 19.9 miles per hour c. 19.9 miles
- 105.1 miles d. 90.6 miles
- A spaceship is accelerating at a rate of .75
m/s/s. It accelerates for 1,245 seconds. What
is its final speed? - a. 1,660.0 m/s c. 1,660 m/s/s
- 933.8 m/s/s d. 933.8 m/s
- A spaceship is accelerating at a rate of .5
m/s/s. It accelerates for 5.6 minutes. What is
its final speed in standard SI units? - 2.8 m/min c. 11.2 m/s
- 9,990 m/s d. 168 m/s
14- Displacement can be?
- More than distance c. Equal to distance
- Less than distance d. Equal or less than
distance - Force is dependent upon?
- Acceleration c. Power
- Mass and velocity d. Mass and acceleration
- What is the net force acting on a 7-kg object,
moving at 4.5 m/s? - 1.55 Newtons c. 11.5 Newtons
- 31.5 Newtons d. 0 Newtons
- If a string is being swung in a clockwise
direction, and it breaks in the position shown,
what will happen to the ball? - It will go to the upper right, straight, and will
slow down - It will curl to the right and up, at the same
speed - It will go to the upper right at a constant speed
- It will go to the upper left and up at a
decreasing speed - Gravity is determined by
- Mass
- Distance
- Mass and velocity
- Distance and mass
15- 1. Newtons is a?
- Measure of weight c. Measure of force
- Measure of mass d. a and c
- 2. Gravitational force is dependent upon what?
- Mass c. Distance
- Weight d. Mass and Distance
- 3. What has more force of gravity?
- A car c. Force of gravity is the same
- A tricycle d. Gravity has no force, only mass
does - 4. What does a horizontal line on a
distance/time graph mean? - Constant acceleration c. Constant speed
- No motion d. Instantaneous movement
- 5. If a ball is swinging on the end of a string,
and the string breaks, what will be the motion of
the ball? - In a direction of a line tangent to the circle,
with constant speed - In a curling direction, similar but farther away
from the circle of the ball and string - In a direction of a line tangent to the circle,
with decreasing speed - In a direction straight away from the circle,
with a constant speed
16Calculate the speed of an object that moves 345.1
meters in 4.6 seconds. Calculate the
acceleration of an object that has a mass of 34.7
kilograms, and is being pushed with a force of
23.4 Newtons? How far will a rock fall, in
Earth gravity, in 33.6 seconds? How fast will
an accelerating object be moving in 46.8 seconds,
if it is accelerating at a constant rate of 1.3
meters per second per second?
17- Motion is a change in ____.
- a. time c. velocity
- b. speed d. position
- The relationship among speed, distance, and time
is ____. - a. t s/d c. s dt
- b. d t/s d. s d/t
- If you ride your bike up a hill, then ride down
the other side, your acceleration is ____. - a. all positive c. first positive, then negative
- b. all negative d. first negative, then positive
- For any object, the greater the force that's
applied to it, the greater its ____ will be. - a. acceleration c. inertia
- b. gravity d. velocity
- The unit of momentum is ____.
- a. kg x m c. kg x m/s2
- kg x m/s d. m/s2
18 A ball attached to a string is being swung
in a clockwise circular path as shown in Figure
3-1. Assume the string breaks at point A. In
which direction will the ball be traveling an
instant later? a. direction a c. direction
c b. direction b d. direction d A ball falls
from a certain height, on Earth, for a time of
35.0 seconds. What is the distance that it has
fallen from? There is no air resistance. Show
your work for credit, and round all answers to
one decimal place. A traveler moves exactly
north 5.0 kilometers, then east exactly 6.0
kilometers. The traveler did all this in 7.0
minutes. What is the average velocity of the
traveler in km/min? Show your work for credit,
show to one decimal place.
19- A force is
- a. A push or a pull c. Something that causes
change - b. Gravity d. The opposite of a pull
- An object is being accelerated at 35 m/s/s. The
force being applied is 17.5 Newtons. What is the
mass of the object? - a. 17.5 kilograms c. .5 kilograms
- b. 2 kilograms d. 42.5 kilograms
- Gravity is dependent upon what?
- a. Mass c. Distance
- b. Mass and Distance d. Distance divided by
mass - Weight is mass
- a. Times gravity c. Divided by gravity
- b. And nothing else d. On Earth
- A meter is about
- a. One foot c. One yard
- b. One mile d. What is a meter?
20- Energy is what?
- a. The change in something c. The ability to
cause change - b. How far something moves d. How fast times
how far something moves - Energy is measured in what?
- a. Kilograms c. Ergs
- b. P d. J
- What is the formula for kinetic energy?
- a. KE mass x velocity c. KE mass x
velocity2 - b. KE 2mass x velocity d. KE ½ mass x
velocity2 - Einstein said that Emc2. What does c stand
for? - a. Speed of light in meters per second c.
Kilometers per second - b. Meters per second d. Kinetic energy
- Which has more kinetic energy a 12-kg ball
moving at 34 m/s, or a 34-kg ball moving at 12
m/s? - a. 12-kg ball c. 34-kg ball
- b. They have the same kinetic energy d.
Cant tell
21- Energy is what/
- a. The change in something c. The ability to
cause change - b. How far something moves d. How fast times
how far something moves - Energy is measured in what?
- a. Kilograms c. Ergs
- b. P d. J
- What is the formula for kinetic energy?
- a. KE mass x velocity c. KE mass x
velocity2 - b. KE 2mass x velocity d. KE ½ mass x
velocity2 - Einstein said that Emc2. What does c stand
for? - a. Meters c. Kilometers per second
- b. Metors per second d. Kinetic energy
- Which has more kinetic energy a 12-kg ball
moving at 34 m/s, or a 34-kg ball moving at 12
m/s? - a. 12-kg ball c. 34-kg ball
- b. They have the same kinetic energy d.
Cant tell
22- To find gravitational potential energy, one must
determine - Height, mass and 9.8 m/s/s c. Height, mass and
acceleration of gravity - Mass, energy and acceleration of gravity d.
Mass, energy and 9.8 m/s/s - Potential Energy is
- Energy of movement c. Energy of position
- Energy not yet created d. Lost Kinetic Energy
- The formula for Kinetic Energy is
- ½ mass x velocity c. Mass by ½ velocity
- ½ mass x velocity2 d. Mass x velocity x
acceleration of gravity - The factors that determine the force of gravity
are - Mass and acceleration c. Mass and distance
between objects - Velocity and mass of objects d. Mass and energy
of objects - What is the MECHANICAL energy of a 3.5-kg object,
moving in a horizontal motion, at 2.5 m/s, 4.0
meters above the surface of Earth. - (This one looks a LOT harder than it really is.
Isolate the important parts of the problem, and
solve it piece by piece.)
23- To find gravitational potential energy, one must
determine - Height, mass and 9.8 m/s/s c. Height, mass and
acceleration of gravity - Mass, energy and acceleration of gravity d.
Mass, energy and 9.8 m/s/s - Potential Energy is
- Energy of movement c. Energy of position
- Energy not yet created d. Lost Kinetic Energy
- The formula for Kinetic Energy is
- ½ mass x velocity c. Mass by ½ velocity
- ½ mass x velocity2 d. Mass x velocity x
acceleration of gravity - The factors that determine the force of gravity
are - Mass and acceleration c. Mass and distance
between objects - Velocity and mass of objects d. Mass and energy
of objects - What is the kinetic energy of a 17-kg ball moving
at 36 meters per second?
24- 1. During movement, what can one say about
energy - It will ALWAYS be converted to heat by
friction c. It will NEVER be converted to heat
by friction - It May be converted heat by friction d. One
cannot tell with this information - 2. If a person is falling from an airplane,
without any frictions, what is true? - He will have no mass c. He will slow down
- He will have no weight d. He will find
terminal velocity at some point - 3. Energy comes to the Earth in the form of
- Chemical energy c. Radiant energy
- Nuclear energy d. Potential energy
- 4. If a person pushes on a wall, but the wall
does not move, is there any energy being used? - No c. Yes
- One cannot tell with this information d.
Potential energy is being stored - 5. What kind of reaction happens in the Sun?
- Fission c. Combustion
- Fusion d. Potential
25- Specific heat is
- An exact measurement c. The name of a concept
- Another name for a Joule d. 4.186
- Q equals
- 4.186 Joules c. mass Change in Temp C
- Kilograms mass d. mass Joules
- Heat is
- The temperature outside c. The average kinetic
energy of atoms in a mass - The movement of energy d. The ABILITY of
thermal energy to move - If one pours ½ of the coffee (why one would waste
a national treasure I do not know) out of a cup - The thermal energy left in the cup is lowered,
but temp is not c. Thermal energy and
temperature are lowered - Temperature is lowered, thermal energy is not d.
Energy is destroyed - To change ºC to K, one must
- Convince ºC that change is good and needed c.
Add 273 - Add 100 d. Do nothing, they are the same
thing
26- Conduction is
- Heat transfer through the direct contact of
particles c. Heat transfer through
electromagnetic waves - Heat transfer through the movement of matter
itself d. The amount of energy in some matter - Which type of heat transfer would be used, for
the energy getting to Earth from the Sun? - Conduction c. Convection
- Radiation d. Inversion
- Which type of metal would heat up faster a
metal with a high specific heat, or a metal with
a low specific heat - Metal with a high specific heat c. Metal with
a low specific heat - They would heat up at the same rate d. It
depends upon the type of heating device
27- Hot air rises. What type of heat/energy transfer
is this? - Conduction c. Radiation
- Convection d. Specific
- 27. You put your hand on a hot electric burner.
What is this? - Conduction c. Radiation
- Convection d. Specific
- 28. What is static electricity most like?
- Kinetic energy c. Potential energy
- Gravitational energy d. Nuclear energy
- 29. What is the law of conservation of energy?
- Energy cannot be created c.Energy cant be
destroyed - Energy cant be created or destroyed. d. Dont
waste it - 30. A cliff diver, who is about to jump, has
- Mostly kinetic energy c. Mostly potential
energy - Equal amount of K.E. P.E. d. Neither K.E. nor
P.E.
28How much kinetic energy does an object with a
mass of 1 kilogram traveling in a straight line
have if it travels at 10 m/s? (A) 10 J
(B) 50 J (C) 98 J (D) 490 J
(E) 980 J As a cannonball is fired straight up
into the air, there is an increase in its
___. (A) gravitational potential energy (C)
chemical potential energy (B) mechanical
energy (D) kinetic energy Which of the
following is the best example of the law of
conservation of energy? (A) Friction produces
thermal energy. (C) The total amount of energy
is constant. (B) People do not conserve
energy. (D) Energy is the ability to cause
change. Aluminum has a specific heat capacity
of 0.900, and copper has a specific heat capacity
of 0.386. If equal masses of aluminum and copper
wire are placed in a flame, which one will
require more energy to raise its temperature by
1?C? (A) aluminum (B) copper (C)
both will increase at the same rate Which has
more total thermal energy a bathtub of cold
water or a red-hot nail? (A) The bathtub of
cold water (C) They both possess equal thermal
energy. (B) A red-hot nail (D) One cannot tell
with the given information.
29There are four forces in nature. Place them in
order from strongest to weakest. _____________
_____________ _____________ __________ The
force that holds protons against other protons in
the nucleus of an atom is which force?
____________________ The force that keeps
protons from turning into neutrons, and also
neutrons from turning into protons, is which
force? It is the __________________________. The
atomic mass of Helium is what? Look in your
book. What is the atomic number of
Thorium? How many neutrons does Polonium have?
30- A circuit that can carry an electrical current is
what? - Closed c. Open
- Complete d. Energized
- Ohms law states that as you lower resistance,
the amps will do what? - His law is Amps Voltage Resistance
- Fall c. Remain the same
- Rise d. Alter the voltage
- The standard voltage in an American home is
- 120 volts, direct current c. 120 volts,
alternating current - 100 volts, alternating current d. 240 volts
- What is the purpose of a fuse?
- It stops voltage from rising to unsafe levels c.
It resists current transmission - It prevents unsafe levels of amperes. d. It
raises voltage levels - The inside of a thermos bottle slows heat loss by
- Being filled with Nitrogen c. Being a vacuum
31- Which of these ways, that heat can move, involves
the movement of the material itself? - a. Conduction c. Convection
- b. Radiation d. Conservation
- Through which material(s) would convection work
best? - a. Gas and solids c. Gas and liquids
- b. Solids and liquids d. Liquids and solids
- How does heat and energy get to us, from the Sun?
- a. Conduction c. Convection
- b. Radiation d. Conservation
- What does an insulator do?
- a. Slows the movement of something c. Speeds
the movement of something - b. Makes something hotter d. Makes things
cooler - Which of these is a good CONDUCTOR of heat (or
electricity) - a. Aluminum c. Rubber
- b. Air d. Wood
32- Smallest particle is what?
- a. Proton b. Electron
- c. Neutron d. Photon
- e. Quark f. Cell
- Particle with a positive charge is what?
- a. Proton b. Electron
- c. Neutron d. Photon
- e. Quark f. Cell
- Particle with no charge is what?
- a. Proton b. Electron
- c. Neutron d. Photon
- e. Quark f. Cell
- Particle of light is called what?
- a. Proton b. Electron
- c. Neutron d. Photon
- e. Quark f. Cell
33- The wave characteristic that indicates energy is
- Amplitude c. Wave height
- Wave length d. Wave frequency
- Hz is a unit of
- Amplitude c. Wave height
- Wave length d. Wave frequency
- The speed of light, in a vacuum, is
- 3,000,000 m/s c. 300,000,000 m/s/s
- 300,000,000 m/s d. 300,000 km/s
- Both b and d f. Both b and c
- If a wave frequency is 45 Hz, and the wave length
is 456 meters, what is the speed of the wave? - A water wave is
- Compressional d. Longitudinal
- Transverse e. a and c
- All of the above
34- The Atomic number (in a neutrally charged atom)
is the same as - The number of protons c. The number of
electrons - The number of neutrons d. Both a and c
- When an atom is split, which force is effected?
- The weak nuclear force c. The strong nuclear
force - The electromagnetic force d. Both a and c
- What is the difference between Carbon-14 and
Nitrogen-14? - The number of protons c. The number of neutrons
- The number of both protons and neutrons d. There
is no difference - Pb has an atomic number of 82, and an atomic mass
of 214. How many neutrons does it have? - 132 c. 214
- 82 d. 296
- The effect of the weak nuclear force is to
- Prevent neutrons and protons from changing into
each other - Keep protons from pushing away from each other
35- The Atomic number (in a neutrally charged atom)
is the same as - The number of protons c. The number of
electrons - The number of neutrons d. Both a and c
- When an atom is split, which force is effected?
- The weak nuclear force c. The strong nuclear
force - The electromagnetic force d. Both a and c
- What is the difference between Carbon-14 and
Nitrogen-14? - The number of protons c. The number of neutrons
- The number of both protons and neutrons d. There
is no difference - Pb has an atomic number of 82, and an atomic mass
of 214. How many neutrons does it have? - 132 c. 214
- 82 d. 296
- The least penetrating radiation is
- Alpha c. Beta
- Gamma d. Delta
36- Atoms are made of three types of particles. They
are - a. Protons, Bosons and Electrons b. Protons,
Neutrons and Electrons - c. Neutrons, Electrons and Positrons d.
Positrons, Antitrons and Selectrons - Cadmium has an atomic number of 48, and 112 total
particles in its nucleus. How many Protons does
Cadmium have? - a. 112 b. 64
- c. 48 d. 200
- 3. Cadmium has 48 protons, and 112 total
particles in its nucleus. How many Neutrons does
Cadmium have? - a. 112 b. 64
- c. 48 d. 200
- The light that you see right now is a direct
result of which force? - a. Strong nuclear b. Weak nuclear
- c. Electromagnetic d. Gravity
- Which is the weakest of all forces?
- a. Strong nuclear b. Weak nuclear
37- When light bends, it is called what?
- a. Refraction b. Reflection
- c. Absorption d. Albedo effect
- Light is what?
- a. A particle called a photon b. A wave of
energy - c. A compression and mechanical wave d. Both
a and b - Which type of wave requires material to pass
through? - a. Electromagnetic b. Light
- c. Radio d. Mechanical
- In which type of wave does the material move
in/at right angles to the direction of the wave? - a. Sound b. Compression
- c Barionic d. Transverse
- What is the speed of light?
- a. 3,000,000 miles per hour b. 300,000,000
m/s - c. 300,000 km/s d. Both b and c
38- The average kinetic energy of all of the atoms in
a mass is called what? - Thermal Energy c. Temperature
- Heat d. Convection
- The movement of thermal energy by direct contact
is called what? - Radiation c. Insulation
- Convection d. Conduction
- To convert Centigrade to Kelvin, a person does
this _________ - Ask Mr. Monroe c. Add 273
- Subtract 100 d. Subtract 273
- Absolute zero is what (you can have more than
one) - The absence of any movement at all c. Zero
Kelvin - Minus 273 Kelvin d. Minus 273 Centigrade
- Which would heat up faster, an aluminum pan with
a specific heat of 2.4, or an iron pan with a
specific heat of 4.3? - The Iron pan c. Aluminum pan
- Same rate d. The amount of heat added must be
known
39- If an equal amount of energy is added to both ICE
and WATER, - a. Ice will heat up, but heat up less c. Water
will heat up, Ice will not - b. Ice will not heat up, water will d.
Neither water, nor ice, will heat up - Which will absorb significantly (a lot) more heat
before it changes? - a. Ice c. Water
- b. They will absorb the same amount d. We
cannot tell with this information. - Why did the hot water, in your experiment, stop
heating at around 90º C? - a. Water cant get hotter than 90º C c. Water
cant absorb any more energy - b. The steam carried away energy d. Why should
I care? - The force that stops the atom from blowing itself
apart is - a. Electromagnetic force c. Weak nuclear
force - b. Strong nuclear force d. Gravity
- An isotope is
- a. Atoms with different numbers of protons
- b. Atoms with different numbers of electrons
40- When a liquid turns to a solid, energy is
- Absorbed c. Released
- Unchanged d. Destroyed
- A state of matter with charged particles is
- Isotopes c. Restatends
- Ions d. Plasma
- The Kinetic theory states that all particles
- Have charge c. Have movement
- Have no charge d. Both a and b
- When a solid turns to a liquid, it is the
- Heat of fusion c. Heat of liquidization
- Heat of vaporization d. Heat of ionization
- 5. H2O is special because it
- Is a liquid in solid form c. Has heat of
vaporization - Becomes larger when frozen d. Has a specific
geometric pattern
41- If one keeps temperature constant, and raises
pressure, volume will - Remain unchanged c. Become lower
- Cry like a baby d. Rise
- If volume is unchanged, and temperature is
increased, pressure will - Rise c. Run away
- Remain unchanged d. Fall
- If volume is increased, and temperature is
unchanged, pressure will - Fall c. Be as scared as an LSW player at an
LSE game - Rise d. Remain unchanged
- An airliner flying, at its maximum flying
altitude, is above about - 25 of the atmosphere c. 50 of the atmosphere
- 90 of the atmosphere d. What is an airliner?
- What is atmospheric air pressure
- 101.3 kPa d. 101.3 pascals
- 101,300 pascals e. Both a,b
42- The Tyndall effect works mostly on
- Solutions c. Colloids
- Elements d. Compounds
- Carbon dioxide would be
- Element c. Compound
- Mixture d. Colloid
- Air is a
- Pure substance d. Element
- Homogeneous mixture e. All the above, except d
- Solution f. All the above, except a, d and e
- Boiling and condensation is used in the process
of - Decanting c. Reverse osmosis
- Distillation d. Crystallization
- A particle in suspension will
- Remain floating in a liquid c. Settle after a
reasonable time
43- A chemical change is
- a. Boiling water c. Burning paper
- b. Melting wax d. Expanding air
- The kinetic theory says that all particles
- Have a charge c. Constantly move
- Have anger issues d. Have protons
- If pressure is increased, temperature is not
changed, volume will - Increase c. Decrease
- Not change d. Not enough information
- Water is weird because
- When it freezes it becomes less dense
- When it freezes it forms crystals
- When it freezes it heats up
- It freezes at 173 Kelvin
- Which of the following is a physical change?
44GAS LAW PROBLEM
You have a balloon, that is free to expand. It
has a volume of 3.4 liters, a pressure of 103.0
kPa and a temperature of 22.1ºC. You squeeze the
balloon to a volume of .3 liters, without
changing the temperature. What is the new
pressure?