Stickler Week 17

Front

What is a substance that will NOT dissolve in water?

Back

Pepper does not dissolve in water.

Front

What are conductors?

Back

Conductors are materials that allow electricity or heat to pass through them easily.

Front

What is a physical change?

Back

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

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

Melting of ice-cream is an example of a physical change.

Front

What happens when salt is added to water?

Back

The salt dissolves in the water.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity or heat to pass through it easily.

Front

What happens to the temperature of water when salt is dissolved in it?

Back

The temperature of the water may increase slightly due to the dissolution process.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not change the substance's chemical identity, while a chemical change does.

Front

What is an example of a chemical change?

Back

Burning of wood is an example of a chemical change.