Physical and Chemical Changes

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1. Which term refers to the measure of how much matter is packed into a given volume, and can be calculated using the formula mass divided by volume?

• law of conservation of mass
• density
• flammability
• chemical property

2. You have a closed container with a burning candle inside. After the candle goes out, you notice the total mass of the container and its contents has not changed. Which concept is being illustrated?

• flammability
• physical change
• law of conservation of mass
• matter

3. When you observe a substance's color, texture, or state of matter, which type of properties are you most likely assessing?

• physical properties
• chemical properties
• density properties
• reactivity properties

4. You place an iron nail in a beaker of acid. It starts to bubble and produce a gas. What type of property is likely being demonstrated by the reaction?

• physical property
• chemical property
• ability to rust
• malleability

5. If a block of wood floats on water, and a block of metal sinks in water, what property are you indirectly observing?

• law of conservation of mass
• acidity
• chemical property
• density

6. A _____________ change involves the rearrangement of atoms to form new substances.

• physical
• chemical
• color
• shape

7. A _____________ change is when matter changes form but its identity remains the same.

• physical
• chemical
• texture
• property