WorksheetsPhysical Science
Total questions: 10
Worksheet time: 5mins
5. Danielle pours lemon juice over a tablespoon of baking soda. At first, many bubbles form, but then they slowly stop forming. What is the BEST clue that this is a chemical change and not a physical change?
a. The bubbles stop forming
b. Bubbles form without heating the liquid
c. The lemon juice and baking soda form a mixture
d. The mixture can be separated
10. When a liquid changes to a solid, it is called the ______________________________ point.
Melting
Freezing
Boiling
16. Spoiled milk:
Physical Change
Chemical Change
14. Melting butter for popcorn:
Physical Change
Chemical Change
4. Which mixture could you BEST separate with a filter?
a. Salt and pepper
b. Rocks and wood shavings
c. Sugar and iron filings
d. Sand and water
13. A wooden log burning in a fire:
Physical Change
Chemical Change
20. Two students are making S’mores. Student 1 says that making S’mores is a physical change because the graham crackers, marshmallow, and chocolate are simply a mixture. Student 2 says that making S’mores is a chemical change because the marshmallow begins to burn when you place it in the fire and becomes dark and crispy on the outside. Who is correct and why?
a. Student 1 is correct.
b. Student 2 is correct.
c. Both students are correct because making S’mores is a physical change when you put the substances together, but a chemical change also occurs when the marshmallow burns.
d. Student 2 is correct because once the crackers, marshmallow, and chocolate are placed together, the mixture cannot be reversed again.
2. Holly has a cube of sugar. She crushes it into powder. What has changed about the sugar?
The mass
The weight
The shape
The shape and the mass
17. A chemical change is easier to reverse than a physical change.
True
False
12. A clay snake is made from a ball of clay:
Physical Change
Chemical Change
