Physical vs Chemical Changes Notes

Multiple Choice

Which of the following is NOT an example of a physical change?

• Water freezing

• Wood breaking apart

• Salt dissolving in water

• Baking soda and vinegar combine and form bubbles

Multiple Choice

What are all the ways a physical change can occur?

• Freezing, steam, evaporation, change shape, bending, crushing, chopping, melting, drying clothes

• A New Substance forms

• Mass decreases, new substance formed, chopping, evaporating

• None of these show evidence of a physical change

Multiple Choice

What does chopping, melting, crushing, breaking glass, ripping up paper and getting paper or clothing wet mean?

• Chemical changes

• Chemical and physical changes

• Physical changes only

• Both the first and the second answer are correct.

Multiple Choice

Wadding up Paper

• physical change

• chemical change

Multiple Choice

Melting Cheese

• physical change

• chemical change

Multiple Choice

A student heats a beaker of water with a hot plate and over time, the water begins to bubble, the volume decreases and vapor is visible. This is an example of a ____________ change.

• Chemical

• Nuclear

• Physical

• Musical

Multiple Choice

Burning Wood

• physical change

• chemical change

Multiple Choice

Milk Souring

• physical change

• chemical change

Multiple Choice

Bicycle Rusting

• physical change

• chemical change

Multiple Choice

Cutting a tree limb into logs is (a)____________ and burning them in the fireplace is (b)____________.

• (a) A Physical Change

  (b) Also a Physical Change

• (a) A Physical Change

  (b) A Chemical Change

• (a) A Chemical Change

  (b) Also a Chemical Change

• (a) A Chemical Change

  (b) A Physical Change

Multiple Choice

When lithium metal is dropped into a container of water, the lithium sparks and fizzes and the water begins to bubble violently. The conclusion that can be drawn from that is:

• A new substance is created because this is a chemical change.

• No new substances are created because there is a chemical change.

• No new substances are created because this is a physical change.

• A new substance is created because this is a physical change.

Multiple Choice

In this example, there is no gas produced, no temperature change, no odor, and no solids formed. This must be a _________ change.

• Physical

• Emotional

• Hypothetical

• Chemical

Multiple Choice

A white crystalline powder is mixed with water. No temperature change is observed but the solid disappears. This must be a __________ change.

• Chemical

• Mechanical

• Physical

• Electrical

Multiple Choice

A car swerves to avoid a collision with an oncoming vehicle and crashes into a tree. The tree falls over. The car is crunched. Liquids pour out of the car onto the street. Based ONLY on those observations, what happened here?

• Physical Changes

• Chemical Changes

• Both Chemical and Physical Changes