Physical Changes and Mixture Separation

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without changing its chemical composition.

Front

What happens when you mix sand and water?

Back

The sand will sink to the bottom and the water will become cloudy.

Front

How can you separate a mixture of nails and plastic buttons?

Back

You can skim a magnet over the top to pick up the nails.

Front

What is a mixture?

Back

A combination of two or more substances that do not chemically combine.

Front

What happens to sugar when it is added to water?

Back

The sugar dissolves and makes the water sweet.

Front

What is filtration?

Back

A process used to separate solids from liquids using a filter.

Front

What is evaporation?

Back

The process of turning from liquid into vapor.

Front

How can you separate sand from water?

Back

You can use a filter to let the water flow through, leaving the sand behind.

Front

What is a solution?

Back

A mixture where one substance is completely dissolved in another.

Front

What happens to salt when it is mixed with water?

Back

The salt dissolves, but its mass and taste remain the same.