Matter Lesson 8

What is it called when original substances change into a new substance?

• Physical change

• Chemical change

• Mechanical change

• Biological change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What new substances are formed when baking soda and vinegar react?

• Oxygen and hydrogen

• Carbon dioxide, water, and sodium acetate

• Nitrogen and helium

• Salt and sugar

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an example of an unexpected color change?

• Water turning to ice

• Green leaves changing colors

• Sugar dissolving in water

• Sand turning to glass

What happens to the properties of salt when it dissolves in water?

• They change chemically

• They remain the same

• They disappear

• They become a new substance

Tags

NGSS.MS-PS1-2

What type of change occurs when heat is added or removed from a substance?

• Chemical change

• Irreversible change

• Physical change

• Permanent change

Tags

NGSS.MS-PS1-4

What does it mean when a change is described as "physical"?

• The substance changes into a new one

• The substance's physical properties change, but it remains the same substance

• The substance disappears

• The substance becomes a gas

Tags

NGSS.MS-PS1-4

Which process shows that a substance can be retrieved through physical means?

• Burning wood

• Dissolving sugar in tea

• Evaporating water to collect salt

• Mixing vinegar and baking soda

What happens if you put 8 ounces of water in a closed plastic bag and leave it in the sun?

• The water will freeze

• The water will evaporate

• The water will boil

• The water will stay the same

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Why does the weight not change in a closed system?

• Because the matter has left the system

• Because the matter has not left the system

• Because the system is open

• Because the system is broken

Tags

NGSS.MS-PS1-5

What is the state change when water evaporates?

• Solid to liquid

• Liquid to gas

• Gas to liquid

• Liquid to solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4