24Powers Matter Unit Test

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another, resulting in the formation of new substances.

Front

Why are some reactions classified as chemical reactions?

Back

They form new substances.

Front

What state of matter is water at 108 ºC?

Back

Gas.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, typically expressed in grams per cubic centimeter (g/cm³).

Front

Does the density of aluminum change based on the size of the sample?

Back

No, the density of aluminum does not change based on the size of the sample.

Front

How can you separate a mixture of salt and iron?

Back

Use a magnet on the sample to attract the iron.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What is the state of matter for a substance with a definite shape and volume?

Back

Solid.

Front

What is the state of matter for a substance that has a definite volume but takes the shape of its container?

Back

Liquid.

Front

What is the state of matter for a substance that has neither a definite shape nor a definite volume?

Back

Gas.