Bellwork 10/13/14

1
Bellwork 10/13/14

• 1. The most basic unit of matter in the
  composition of a dog is...?
• A. a molecule. B. a tissue.
• C. an atom. D. a compound.

Write the question and answer. Justify your
answer.
2
Bellwork answer

• 1. The most basic unit of matter in the
  composition of a dog is...?
• A. a molecule. B. a tissue.
• C. an atom. D. a compound.

An atom is the smallest unit of an element that
maintains the properties of that element.
3
Objectives

• SPI 0807.9.1 Do I recognize that all matter
  consists of atoms?
• SPI 0807.9.2 - What is the common outcome of
  all chemical changes?
• SPI 0807.9.6 How can I discover if a chemical
  or physical change has occurred?
• SNB 2nd 9 weeks word wall - Write the
  following words and definitions in the back of
  your Scientific Notebook.

4
2nd 9 Weeks Word Wall

• 1. Weight - measure of the gravitational force
  exerted on an object
• 2. Matter - anything that has mass and takes up
  space
• 3. Inertia - tendency of an object to resist
  change
• 4. Density - the amount of matter in a given
  space or volume
• 5. Composition - the type of matter that makes up
  the object and the way the matter is arranged

5
Word Wall

• Glue the 2nd 9 Weeks Word Wall Words in the back
  of your SNB.
• We will work on 5 each week.
• We will have a quiz over the 5 words at the end
  of each week.

6
Chapter 7 Directed ReadingRead Section 1 then
answer the following questions on a piece of
paper to be turned in.

• For each description, write whether it applies to
  mass or to weight.
• ________________1. is a measure of the amount of
  matter in the object
• ________________2. is always constant no matter
  where the object is located
• ________________3. is a measure of the
  gravitational force on an object
• ________________4. is measured using a spring
  scale
• ________________5. is expressed in grams (g),
  kilograms (kg), or milligrams (mg)
• ________________6. is expressed in Newtons (N)
• ________________7. is less on the moon than on
  Earth

7
Chapter 7 Directed Reading

• For each description, write whether it applies to
  mass or to weight.
• ___Mass_________1. is a measure of the amount of
  matter in the object
• ___Mass_________2. is always constant no matter
  where the object is located
• ___Weight_______3. is a measure of the
  gravitational force on an object
• ___Weight_______4. is measured using a spring
  scale
• ___Mass_________5. is expressed in grams (g),
  kilograms (kg), or milligrams (mg)
• ___Weight_______6. is expressed in Newtons (N)
• ___Weight_______7. is less on the moon than on
  Earth

8
Read Section 2 then answer the following
questions.Match the correct example with the
correct physical property.

• ____8. Aluminum can be flattened into sheets of
  foil.
• ____9. An ice cube floats in a glass of water.
• ____10. Copper can be pulled into thin wires.
• ____11. Plastic foam protects you from hot
  liquid.
• ____12. Flavored drink mix dissolves in water.
• ____13. An onion gives off a very distinctive
  smell.
• ____14. A golf ball has more mass than a table
  tennis ball.
• A. State E. odor
• B. Solubility F. ductility
• C. thermal conductivity G. density
• D. Malleability

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Match the correct example with the correct
physical property.

• _D__8. Aluminum can be flattened into sheets of
  foil. _A__9. An ice cube floats in a glass of
  water.
• _F__10. Copper can be pulled into thin wires.
• _C__11. Plastic foam protects you from hot
  liquid.
• _B__12. Flavored drink mix dissolves in water.
• _E__13. An onion gives off a very distinctive
  smell.
• _G__14. A golf ball has more mass than a table
  tennis ball.
• A. State E. odor
• B. Solubility F. ductility
• C. thermal conductivity G. density
• D. Malleability

10

• 15. What is the equation for density?
• 16. If you pour different liquids into a
  graduated cylinder, the liquids will form layers
  based upon differences in the ___________________
  ___ of each liquid.

11

• 15. What is the equation for density?
•  DM/V
• 16. If you pour different liquids into a
  graduated cylinder, the liquids will form layers
  based upon differences in the __density_________
  of each liquid.

12
Read section 3. Identify whether the following
changes are physical changes or chemical changes.
Label each change either PC for physical change
or CC for chemical change.

• _____17. sanding a piece of wood
• _____18. baking bread
• _____19. crushing an aluminum can
• _____20. melting an ice cube
• _____21. dissolving sugar in water
• _____22. molding a piece of silver
• _____23. mixing vinegar and baking soda

13
Read section 3. Identify whether the following
changes are physical changes or chemical changes.
Label each change either PC for physical change
or CC for chemical change.

• _____24. grinding baking soda into a powder
• _____25. souring milk
• _____26. melting an ice cream bar
• _____27. burning a wooden match
• _____28. shooting off fireworks
• _____29. mixing drink mix
• _____30. bending an iron nail

14
Read section 3. Identify whether the following
changes are physical changes or chemical changes.
Label each change either PC for physical change
or CC for chemical change.

• _PC__17. sanding a piece of wood
• _CC__18. baking bread
• _PC__19. crushing an aluminum can
• _PC__20. melting an ice cube
• _PC__21. dissolving sugar in water
• _PC__22. molding a piece of silver
• _CC__23. mixing vinegar and baking soda 

15
Label each change either PC for physical change
or CC for chemical change

• _PC__24. grinding baking soda into a powder
• _CC__25. souring milk
• _PC__26. melting an ice cream bar
• _CC__27. burning a wooden match
• _CC__28. shooting off fireworks
• _PC__29. mixing drink mix
• _PC__30. bending an iron nail

16
Exit Ticket

• What is the mass of a car that weighs 13,620 N?