2nd 9 weeks Review Part 2

1
2nd 9 weeks Review Part 2

• Chapters 5-8

2
2nd 9 weeks Review Part 2

• Why is color a physical property?
• Color can be observed without changing the
  object.

3
2nd 9 weeks Review Part 2

• What happens during a physical change?
• The appearance of matter change, but the
  composition does not change.

4
2nd 9 weeks Review Part 2

• What type of change is a change of state (like
  water changing to ice)?
• All changes of state are physical changes

5
2nd 9 weeks Review Part 2

• What happens during a chemical change?
• During a chemical change, substances are change
  into different substances.

6
2nd 9 weeks Review Part 2

• What are three clues that a chemical change has
  occurred?
• Change in color, loss or gain of energy, change
  of smell and production of a gas or a solid

7
2nd 9 weeks Review Part 2

• What is an example of a chemical change?
• Possible answers could include anything burning,
  rusting or tarnishing. Other answers are also
  possible given teacher approval.

8
2nd 9 weeks Review Part 2

• List three ways that paper can go through a
  physical change.
• Crumble the paper, color the paper, cut the
  paper, tear the paper, etc.

9
2nd 9 weeks Review Part 2

• How could you make paper go through a chemical
  change?
• You could burn the paper

10
2nd 9 weeks Review Part 2

• What word best describes the type of materials
  that attract iron?
• A. Magnetic
• B. Chemical
• C. Mass
• D. Physical
• Answer A, magnetic

11
2nd 9 weeks Review Part 2

• Which is an example of a chemical property?
• A. Color
• B. Mass
• C. Density
• D. Ability to burn
• Answer D, ability to burn

12
2nd 9 weeks Review Part 2

• 12. Which is an example of a physical change?
• A. Metal rusting
• B. Silver tarnishing
• C. Water boiling
• D. Paper burning
• Answer C, water boiling

13
2nd 9 weeks Review Part 2

• What characteristic best describes what happens
  during a physical change?
• A. Composition changes
• B. Composition stays the same
• C. Form stays the same
• D. Mass is lost
• Answer B, composition stays the same

14
2nd 9 weeks Review Part 2

• Which is an example of a chemical change?
• A. Water freezes
• B. Wood is carved
• C. Bread is toasted
• D. Wire is bent
• Answer C, bread is toasted

15
2nd 9 weeks Review Part 2

• Which is NOT a clue that could indicate a
  chemical change?
• A. Change in color
• B. Change in shape
• C. Change in energy
• D. Change in odor
• Answer B, change in shape

16
2nd 9 weeks Review Part 2

• What property stays the same during physical and
  chemical changes?
• A. Density
• B. Shape
• C. Mass
• D. Arrangement of particles
• Answer C, mass

17
2nd 9 weeks Review Part 2

• What kind of change is taking place when you cut
  a piece of cake from the whole?
• Answer physical change

18
2nd 9 weeks Review Part 2

• What kind of change is taking place when a candle
  is being burnt?
• Answer a chemical change

19
2nd 9 weeks Review Part 2

• What could you do to an object to cause a
  chemical change?
• A. Cut it
• B. Paint it
• C. Throw it
• D. Burn it
• Answer d, burn it

20
2nd 9 weeks Review Part 2

• Which of the following choices describes a
  physical change?
• A. Pouring an acid onto calcium carbonate
• B. Dropping an antacid tablet into water
• C. Heating water to its boiling point
• D. Pouring vinegar onto baking soda
• Answer c, heating water to its boiling point

21
2nd 9 weeks Review Part 2

• Which of the following occurs as you heat a
  liquid to its boiling point?
• A. Condensation
• B. Melting
• C. Vaporization
• D. Freezing
• Answer c, vaporization

22
2nd 9 weeks Review Part 2

• Tell me at least 3 physical properties.
• Answer Physical properties include state,
  color, shape, smell, taste and texture, mass,
  volume, density, melting point and boiling point.
  

23
2nd 9 weeks Review Part 2

• What happens if vaporization or condensation
  occurs?
• Answer substance changes from a liquid to a gas

24
2nd 9 weeks Review Part 2

• A ___________ can change shape and volume.
• Answer gas

25
2nd 9 weeks Review Part 2

• A __________ has a different shape, but the same
  volume in any container.
• Answer liquid

26
2nd 9 weeks Review Part 2

• A substance changes from a gas to a liquid during
  the process of ___________.
• Answer condensation

27
2nd 9 weeks Review Part 2

• A liquid becomes a gas during ______________.
• Answer vaporization or evaporation

28
2nd 9 weeks Review Part 2

• What property enables you to float a needle on
  water?
• Viscosity
• Temperature
• Surface tension
• Crystal structure
• Answer C, surface tension

29
2nd 9 weeks Review Part 2

• In which case will an object float on a fluid?
• Buoyant force is greater than weight
• Buoyant force is less than weight
• Buoyant force equals weight
• Buoyant force equals zero
• Answer A or C

30
2nd 9 weeks Review Part 2

• What is the process called when a gas cools to
  form a liquid?
• Condensation
• Sublimation
• Boiling
• Freezing
• Answer A, condensation

31
2nd 9 weeks Review Part 2

• Force is measured by ____________.
• Pascals
• Newtons
• Kilopascals
• Meters
• Answer B, Newtons

32
2nd 9 weeks Review Part 2

• The freezing point of a substance is _______ the
  melting point of the same substance.
• Greater than
• Less than
• Equal to
• Unrelated to
• Answer C, equal to

33
2nd 9 weeks Review Part 2

• A cork is able to float on water because it is
  ___________.
• A crystalline solid
• Equal in density to water
• Small in size
• Less dense than water
• Answer D, less dense than water

34
2nd 9 weeks Review Part 2

• What holds the nucleus of an atom together?
• Answer The Strong Nuclear Force

35
2nd 9 weeks Review Part 2

• What two things are located in the nucleus of an
  atom?
• Answer Positively charged protons and neutrally
  charged neutrons.

36
2nd 9 weeks Review Part 2

• What charge does an electron have?
• Answer negative

37
2nd 9 weeks Review Part 2

• During beta-particle emission, a neutron splits
  into ____?
• A. A proton and an electron
• B. Two protons
• C. Two electrons
• D. Two neutrons
• Answer a proton and an electron

38
2nd 9 weeks Review Part 2

• Who was the first person to propose what an atom
  was?
• Answer Dalton

39
2nd 9 weeks Review Part 2

• Explain how Dalton thought an atom looked?
• Answer Dalton thought that the atom was a solid
  sphere that was the same throughout

40
2nd 9 weeks Review Part 2

• How did Thomson think the atom looked?
• Answer Thomson thought the atom was an even
  mixture of positive and negative charges and that
  it was neutral.

41
2nd 9 weeks Review Part 2

• What did Rutherford think about the atom?
• Answer Rutherford realized that the atom had to
  have a nucleus. He thought that there was a tiny
  nucleus filled with positively charged protons
  and that negatively charged electrons surrounded
  the nucleus.

42
2nd 9 weeks Review Part 2

• What do we know about the model of the atom
  today?
• Answer We now know that the atom has a nucleus
  filled with protons and neutrons and that
  electrons surround the nucleus.

43
2nd 9 weeks Review Part 2

• What is another name for the atomic number of an
  element?
• Answer of protons

44
2nd 9 weeks Review Part 2

• How is a period set up on the periodic table?
• Answer rows/left to right/horizontally

45
2nd 9 weeks Review Part 2

• Where are the representative elements on the
  periodic table?
• Answer Groups 1-2 and groups 13-18

46
2nd 9 weeks Review Part 2

• How is a group (or family) set up on the periodic
  table?
• Answer up and down/vertically

47
2nd 9 weeks Review Part 2

• Where are the transition elements on the periodic
  table?
• Answer groups 3-12

48
2nd 9 weeks Review Part 2

• Which element is NOT part of the iron triad?
• A. Nickel
• B. Copper
• C. Cobalt
• D. Iron
• Answer B, copper

49
2nd 9 weeks Review Part 2

• Which statement about the periodic table is TRUE?
  
• A. Elements all occur naturally on Earth.
• B. Elements occur in the order in which they
  were discovered.
• C. Elements with similar properties occupy the
  same group.
• D. Element are arranged in the order Mendeleev
  chose.
• Answer C, elements with similar properties
  occupy the same group.

50
2nd 9 weeks Review Part 2

• How did Mendeleev arrange the first periodic
  table?
• Answer Mendeleev arranged the periodic table in
  order by atomic mass.

51
2nd 9 weeks Review Part 2

• How did Moseley improve the arrangement of the
  periodic table?
• Answer Moseley re-arranged the periodic table
  by order of increasing atomic number.

52
2nd 9 weeks Review Part 2

• When Mendeleev arranged his first periodic table
  by atomic mass, he noticed that elements with
  similar __________ fell into groups on the
  periodic table.
• Answer properties

53
2nd 9 weeks Review Part 2

• Which of the following statements about Iron is
  NOT correct?
• A. Iron is found in the hemoglobin of red blood
  cells
• B. Iron is a component of steel
• C. Iron is a member of the iron triad
• D. Iron is a metalloid
• Answer d, iron is a metal not a metalloid

54
2nd 9 weeks Review Part 2

• Who created the first version of the periodic
  table Moseley or Mendeleev?
• Answer Mendeleev

55
2nd 9 weeks Review Part 2

• What is the name given to a row of elements in
  the periodic table whose densities and melting
  points change gradually and predictably?
• Answer a period