Chemical vs. Physical Changes

Front

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

Back

A chemical change results in the formation of new substances with different properties, while a physical change does not alter the chemical composition of a substance.

Front

What is an example of a chemical change?

Back

The spoiling of milk is an example of a chemical change.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What happens to the chemical composition of a substance during a chemical change?

Back

The chemical composition of a substance changes during a chemical change.

Front

What is a flame test used for?

Back

A flame test is used to identify the presence of certain metals or gases, such as hydrogen.

Front

What sound indicates the presence of hydrogen gas during a flame test?

Back

A 'pop' sound indicates the presence of hydrogen gas during a flame test.

Front

What type of change occurs when something burns?

Back

Burning is a chemical change.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What type of change is typically associated with changes in states of matter?

Back

Changes between states of matter are typically physical changes.

Front

What is an indicator of a chemical change?

Back

Indicators of a chemical change can include color change, temperature change, gas production, or the formation of a precipitate.