Science Assessment Study Guide

Front

What happens to sugar particles when added to water?

Back

The sugar particles spread out and mix evenly throughout the water.

Front

What tool can be used to separate a mixture of salt and pepper?

Back

Water and filter paper can be used to separate salt and pepper.

Front

If 30 g of salt is dissolved in 600 g of water, what is the mass of the salt in the solution?

Back

The mass of the salt in the solution is 30 g.

Front

Which objects are less dense than water?

Back

Leaf and wood log are less dense than water.

Front

What are electrical insulators?

Back

Cotton ball, toothbrush, and eraser are electrical insulators.

Front

What is a solution?

Back

A solution is a mixture where one substance is completely dissolved in another.

Front

What is density?

Back

Density is the mass of an object divided by its volume.

Front

What is the purpose of a filter in separating mixtures?

Back

A filter separates solid particles from liquids.

Front

What is an example of a physical change?

Back

Dissolving sugar in water is a physical change.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of substances that can be separated, while a compound is a substance formed when two or more elements chemically bond.