Evidence of a chemical change

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances with different properties.

Front

What is evidence of a chemical change?

Back

Indicators that a chemical change has occurred, such as color change, gas production, temperature change, and formation of a new substance.

Front

Which of the following is NOT evidence of a chemical change?

Back

Breaking.

Front

What is a new substance?

Back

A material that has different properties from the original substances after a chemical change.

Front

What are some examples of chemical changes?

Back

Fizzing, foaming, burning, and color changes.

Front

What does fizzing indicate in a chemical reaction?

Back

The production of gas, which is evidence of a chemical change.

Front

What happens to the properties of substances during a chemical change?

Back

The properties change, resulting in new substances.

Front

Is the formation of bubbles in soda a chemical change?

Back

No, because the gas is dissolved in the liquid and just escapes when poured.

Front

What are some signs of a chemical change?

Back

Unexpected color change, gas production, temperature change, and formation of a precipitate.

Front

What does it mean if a reaction produces heat?

Back

It indicates that a chemical change has occurred, often an exothermic reaction.