Matter/Change Practice

Select all of the following that are PHYSICAL changes:

• Salt dissolving in water

• Acid reacts with metal to produce hydrogen gas

• A piece of copper is cut in half

• A sugar cube is ground up

• Water is heated and changed to steam

Select all of the following that are CHEMICAL changes:

• Iron rusts

• Ice melts

• Milk sours (goes bad)

• Sodium metal explodes in water

• Pancakes cook in a pan

Select all of the following that are PHYSICAL changes:

• Grass grows on a lawn

• A tire is inflated with air

• Food is digested in your stomach

• Water is absorbed by a paper towel

• Paper burns

Select all of the following that are CHEMICAL changes:

• Water freezes

• Fireworks explode

• Alka-seltzer gives off gas when put into water

• Clouds form in the sky

• A car burning gasoline to drive

What is matter?

• light, sound, and magnetism

• anything that has mass and takes up space

• two things mixed together

• two elements joined chemically

Tags

NGSS.MS-PS1-5

Which is a physical property?

• rusting

• exploding

• color

• bubbling when mixed with acid

What is a physical property/change?

• you can observe it without changing the substance

• you observe it when changing it to something else

• a property to identify something

• property you can hold and grab

What is a chemical property/change?

• property observed without changing a substance

• property observed by changing a substance

• property used to identify a substance

• property that stays the same

Which is a metric unit of mass?

• kilogram

• meter

• liter

• joule

What is a characteristic property?

• property that does not change a substance to observe it

• property that can identify a substance

• property that is observed when changing a substance

• property that seen with the eyes