Which is a PHYSICAL change?

• ice melting

• metal rusting

• food rotting

• wood burning

Tags

NGSS.MS-PS1-4

Evaporation occurs when

• liquid absorbs energy from the sun and forms water vapor

• water vapor absorbs energy from the sun and forms liquid

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Which is an example of a chemical change (new substance formed)?

• ice melting

• wood burning

• hair drying

• water evaporating

Tags

NGSS.MS-PS1-2

An entire cup of water evaporates. How is the mass of the liquid water and the water vapor compared?

• The liquid water's mass is more

• The water vapor's mass is more

• The mass is the same

Tags

NGSS.MS-PS1-5

Michael left his bicycle laying in the yard during several rain storms. When Michael went to ride his bicycle again, he noticed rust on the metal bicycle chain. What inference can Michael make about the rust on the metal bicycle chain?

• Rust formed on the metal bicycle chain because it was covered with too much lubricant.

• Rust formed on the metal bicycle chain because it had been left out in direct sunlight.

• Rust formed on the metal bicycle chain because elements from the rain, the air, and the metal chemically combined.

• Rust formed on the metal bicycle chain because the bicycle was left laying on its side.

Tags

NGSS.MS-PS1-2

A student placed sand in a bowl and added pebbles to it. The student then stirred the contents of the bowl using a spoon. Which statement correctly describes the contents of the bowl?

• It is a solution as it is a combination of two solids

• It is a solution as it can be separated into individual substances

• It is a mixture as both sand and pebbles keep their separate properties.

• It is a mixture as both sand and pebbles cannot be distinguished separately.

In which situation is a chemical reaction not taking place?

• salt dissolving in water

• rusting of an old car in a junk yard

• burning gasoline in a car

• digestion of food in your body

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Ron observed a person making a campfire. He made a list of three things he observed. During which observation(s) was Ron observing a physical change?

• observation 1

• observation 3

• observations 1 and 3

• observations 2 and 3

What do you call matter that spreads to fill a space?

• Gas

• Solid

• Liquid

• evaporate

What do you call anything that takes up space?

• States of Matter

• Mass

• Matter

• Evaporate