Practice for Checkpoint

Which of the following is an example of a physical change?

• Mixing salt and water

• Burning wood

• Boiling water

• Melting ice

What happens to the mass during a chemical change?

• The mass remains the same.

• The mass fluctuates.

• The mass increases.

• The mass decreases.

Tags

NGSS.MS-PS1-5

Which of the following is an example of a chemical change?

• Melting ice

• Mixing salt and water

• Burning wood

• Cutting paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the main difference between physical and chemical changes?

• Physical changes only affect the physical properties of a substance, while chemical changes result in the formation of new substances.

• Physical changes only affect the chemical properties of a substance, while chemical changes result in the formation of new substances.

• Physical changes involve a change in state, while chemical changes involve a change in color.

• Physical changes are reversible, while chemical changes are irreversible.

Tags

NGSS.MS-PS1-4

Which of the following is an example of a physical change?

• Melting ice

• Burning wood

• Boiling water

• Mixing salt and water

What is the color change observed during a chemical change called?

• color transformation

• chemical transformation

• color alteration

• chemical reaction

Tags

NGSS.MS-PS1-2

When one of the parts of the solution is water we call it _________. 

• water stuff 
• water mixture 
• aqua-man
• aqueous 

If we are making Kool-aid with sugar, Kool-aid powder, and water, which part is the solvent?

• water
• powder
• sugar
• powder and sugar

You can make a solution more concentrated by adding more __________.

• solute
• solvent
• water
• solution

In Michael's science experiment with salt water, NaCl (salt) would be considered the ______.

• Solution

• Solute

• Solvent

• Solvation