Distinguishing Physical and Chemical Changes

What type of change occurs when ice melts into water?

• Biological change

• Permanent change

• Physical change

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Can a physical change be easily reversed?

• Only in certain conditions

• Yes, always

• Not applicable

• No, never

What is a key characteristic of a chemical change?

• Color change

• State change

• No new substance formed

• Reversible

Tags

NGSS.MS-PS1-2

What happens when a log burns?

• It remains unchanged

• It can be reversed

• It turns into ash, a chemical change

• It undergoes a physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

What is not a characteristic of a chemical change?

• Easily reversible

• Change in color

• Production of gas

• Energy release

Tags

NGSS.MS-PS1-2

What indicates a chemical change when cooking an egg?

• It can be reversed easily

• A color change occurs

• The egg returns to its original state

• The egg becomes softer

Tags

NGSS.MS-PS1-2

What does the change in hair color at a salon represent?

• No change

• Chemical change

• Temporary change

• Physical change

Tags

NGSS.MS-PS1-2

Which of the following is a sign of a chemical change?

• Sharpening a pencil

• Burning of wood

• Cutting hair

• Melting of ice

Tags

NGSS.MS-PS1-2

What is formed when two clear liquids react?

• A precipitate

• A gas

• A color change

• A solid

Tags

NGSS.MS-PS1-2

What does the reaction of sodium with water demonstrate?

• No change

• Physical change

• Chemical change

• State change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5