Physical and Chemical Changes (quick review)

  1. Scenario:
    Umm! A student removes a loaf of bread hot from the oven. The student cuts a slice off the loaf and spreads butter on it. Physical or Chemical change?
    Physical
  2. Scenario:
    Your friend decides to toast a piece of bread, but leaves it in the toaster too long. The bread is black and the kitchen is full of smoke. Physical or Chemical change?
    Chemical
  3. Scenario:
    You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. Physical or Chemical change?
    Chemical
  4. Scenario:
    You blow dry your wet hair.
    Physical
  5. Scenario:
    In baking biscuits and other quick breads, the baking powder reacts to release carbon dioxide bubbles. The carbon dioxide bubbles cause the dough to rise. Physical or Chemical change?
    Chemical
  6. Scenario:
    You take out your best silver spoons and notice that they are very dull and have some black spots. Physical or Chemical change?
    Chemical
  7. Scenario:
    A straight piece of wire is coiled to form a spring. Physical or Chemical change?
    Physical
  8. Scenario
    Food color is dropped into water to give it color. Physical or Chemical change?
    Physical 

    *Diffusion occurred in this, so you can also physically separate this as well, too.
  9. Scenario:
    Chewing food to break it down into smaller particles represents a ______ change, but the changing of starch into sugars by enzymes in the digestive system represents a ______ change. Physical or Chemical change?
    Physical; Chemical
  10. Scenario:
    In a fireworks show, the fireworks explode giving off heat and light. Physical or Chemical change?
    Chemical
  11. TRUE or FALSE?

    Changing the size and shapes of pieces of wood would be a chemical change.
    False
  12. TRUE or FALSE?

    In a physical change, the makeup of matter is changed.
    False
  13. TRUE or FALSE?

    Evaporation is a physical change.
    True
  14. TRUE or FALSE?

    Burning wood is a physical change.
    False
  15. TRUE or FALSE?

    Evaporation occurs when liquid water changes into a gas.
    True
  16. TRUE or FALSE?

    Combining hydrogen and oxygen to make water is a physical change.
    False
  17. TRUE or FALSE?

    Breaking up concrete is a physical change.
    True
  18. TRUE or FALSE?

    Sand being washed out to sea from the beach is a chemical change.
    False
  19. TRUE or FALSE?

    When ice cream melts, a chemical change occurs.
    False
  20. TRUE or FALSE?

    Acid rain damaging a marble statue is a physical change.
    False
  21. Name traits for physical changes.

    1.
    2.
    3.
    • 1. Density
    • 2. Viscosity
    • 3. Any change of the state of matter
  22. Name traits for chemical changes.

    1.
    1. Rearrangement of elements
  23. Name the phase changes. Be sure to be familiar with these terms as well!

    1. Solid ☞ Liquid - ____
    2. Liquid ☞ Solid - _____
    3. Liquid ☞ Gas - ______
    4. Gas ☞ Liquid - ______
    5. Solid ☞ Gas - ______
    6. Gas ☞ Solid - ______
    • 1. Melting
    • 2. Freezing
    • 3. Evaporation (vaporization)
    • 4. Condensation
    • 5. Sublimation
    • 6. Deposition
  24. Name the six signs that is a telltale sign for a chemical reaction. 

    1.
    2. 
    3.
    4.
    5.
    6.
    • 1. Heat
    • 2. Color
    • 3. Odor
    • 4. Production of a gas
    • 5. Light
    • 6. Precipitate (Solid that forms from two liquids that are usually clear)
Author
dearmaria1
ID
341977
Card Set
Physical and Chemical Changes (quick review)
Description
"We could rewrite the stars." -Anne Wheeler
Updated