Magic Matter Unit 1

Front

What happens when ice cubes melt on a warm day?

Back

The phase change is from solid to liquid; energy is being added to cause the change.

Front

What does it mean when a balloon filled with gas weighs the same before and after a reaction?

Back

Mass is conserved when all substances are measured.

Front

What is the best method to separate a mixture of salt and water?

Back

Evaporate the water, leaving the salt behind.

Front

What is the independent variable in an experiment investigating the effect of temperature on dissolving sugar?

Back

The temperature of the water.

Front

What is the dependent variable in an experiment investigating the effect of temperature on dissolving sugar?

Back

How fast the sugar dissolves.

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a phase change?

Back

A phase change is a transition of matter from one state to another, such as solid to liquid.

Front

What is the law of conservation of mass?

Back

The law states that mass cannot be created or destroyed in a chemical reaction.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded.

Front

What is evaporation?

Back

Evaporation is the process by which liquid turns into vapor.