5.2 Matter Changing States
- 1. Matter can alter its form through a chemical change or through a physical change. No matter what the type of change is, every time matter alters its form -
A) the matter releases heat energy
B) the amount of matter is the same
C) some of the matter is destroyed
D) new matter will be created
- 2. A student placed a beaker of water near a window and recorded the volume of water in the beaker for 3 weeks. What volume of liquid water was converted to water vapor that entered the air over the 3 week period?
Week 1 Volume: 100 mL
Week 3 Volume: 22 mL
A) 122 mL
B) 78 mL
C) 22 mL
D) 100 mL
- 3. A student places 100 g of water and 50 g of ice into a beaker. Which of the following is the best prediction for the mass of the contents of the beaker after the ice has melted into the water?
A) 50 g
B) 25 g
C) 100 g
D) 150 g
- 4. Students mix 5 grams of baking soda, a white powder, with 5 grams of vinegar, a clear liquid. The vinegar and baking soda react and bubbles form. Which of the following best explains why the final product of this reaction has a mass less than 10 grams?
A) In every chemical reaction, some of the matter is always destroyed.
B) The baking powder is denser than the vinegar, so it settles to the bottom.
C) The vinegar fills in the spaces between the particles of baking soda.
D) The bubbles are a gas that represent matter that escaped.
- 5. saved or used sparingly or wisely
A) properties
B) matter
C) conserved
D) weight
- 6. anything that has mass and takes up space
A) matter
B) properties
C) conserved
D) weight
- 7. physical or chemical characteristics of matter used to describe or identify a substance
A) properties
B) weight
C) matter
D) conserved
- 8. the heaviness of an object; force of gravity on mass
A) matter
B) weight
C) conserved
D) properties
- 9. Your friend is wondering if an ice cube is heavier before or after it melts. What would you tell them?
- 10. Think about your favorite foods. How will they be affected by heat? How will they be affected by cold temperatures?
- 11. What types of matter are all of the ingredients in hot chocolate? The ingredients in hot chocolate are: warm water or milk, cocoa powder, and marshmallows.
- 12. What happens to the different types of matter when you mix them to make the hot chocolate?
- 13. When matter changes states (becomes a solid, liquid, or gas) or combines to make new substances, the total amount of matter changes.
true or false
A) true
B) false
- 14. In a physical change, the state of matter can change by adding or removing heat, but the amount of matter remains the same.
A) false
B) true
- 15. In a chemical change, the amount of substance that you begin with must equal the amount of substance you end with, in a closed container.
A) false
B) true
- 16. Adding heat can cause materials to melt or vaporize which can change their state, color, and texture.
A) false
B) true
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