Physical Science

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. Examples include melting ice or tearing paper.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include rusting iron or burning wood.

Front

What is a conductor?

Back

A conductor is a material that allows heat or electricity to pass through it easily. Examples include metals like copper and aluminum.

Front

What is an insulator?

Back

An insulator is a material that does not allow heat or electricity to pass through it easily. Examples include rubber, glass, and wood.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. For example, a metal spoon getting hot in a pot of boiling water.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). For example, warm air rising and cool air sinking.

Front

What is radiation?

Back

Radiation is the transfer of heat through electromagnetic waves. An example is the warmth felt from the sun.

Front

What happens to water when it freezes?

Back

When water freezes, it undergoes a physical change from liquid to solid, forming ice.

Front

What happens to wood when it burns?

Back

When wood burns, it undergoes a chemical change, producing ash, smoke, and gases.

Front

What is melting?

Back

Melting is the process of a solid turning into a liquid when heat is applied. An example is ice melting into water.