Physical and Chemical Changes Lab Quiz

What is the difference between a physical and chemical change?

• A physical change alters the substance's chemical composition, while a chemical change does not.

• A physical change is reversible, while a chemical change is not.

• A chemical change alters the substance's chemical composition, while a physical change does not.

• A chemical change is reversible, while a physical change is not.

How can physical and chemical changes be observed during the process of saponification?

• By measuring the temperature change only.

• By observing the color change only.

• By observing both the formation of soap and the release of heat.

• By noting the change in smell only.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What were the Egyptians among the first to make in ancient history?

• Modern-day soap

• Perfume

• Paper

• Glass

What type of changes occur when making soap?

• Physical and chemical

• Only physical

• Only chemical

• Biological

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an example of a physical change?

• Water freezing

• Iron rusting

• Wood burning

• Milk souring

What is a sign that a chemical change has occurred?

• A sudden change in temperature

• A change in shape

• A change in size

• A change in color

Tags

NGSS.MS-PS1-2

What is an example of a chemical change mentioned in the text?

• Melting ice

• Burning wood

• Cutting paper

• Freezing water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the process of making soap called?

• Fermentation

• Saponification

• Evaporation

• Condensation

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

• Melting crayon

• Adding NaOH to water

• Adding NaOH to oil

• Burning wood

Which procedure is likely to result in a chemical change?

• Melting crayon

• Adding NaOH to water

• Freezing water

• Cutting paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5