Chemical and Physical Changes

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties. Examples include burning wood, baking cupcakes, and copper tarnishing.

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition. Examples include melting ice, dissolving sugar in water, and breaking glass.

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Dissolving sugar in water is a physical change.

Front

What happens during a chemical change?

Back

During a chemical change, the bonds between atoms are broken and new bonds are formed, resulting in the creation of new substances.

Front

What happens during a physical change?

Back

During a physical change, the substance may change its state or appearance, but its chemical identity remains the same.

Front

Give an example of a chemical change.

Back

An example of a chemical change is baking cupcakes, where ingredients react to form a new product.

Front

Give an example of a physical change.

Back

An example of a physical change is melting ice into water.

Front

What is copper tarnishing an example of?

Back

Copper tarnishing is an example of a chemical change.

Front

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

Back

A physical change affects the form of a substance, while a chemical change results in the formation of new substances.