Physical and Chemical Changes; Law of Conservation of Mass

Front

Mixing baking soda and vinegar produces bubbles of carbon dioxide. True statement:

Back

A chemical change occurred due to the release of a new gas.

Front

Total mass of products < reactants after a reaction because:

Back

Gases were released into the air.

Front

Food coloring mixed in water: true statement?

Back

No chemical change occurred; no new substance formed.

Front

Plants create food via photosynthesis, starting with 6 carbon atoms. How many carbon atoms remain after the reaction?

Back

6 carbon atoms

Front

Chemical property:

Back

Reactivity with air

Front

Total matter before and after a reaction remains constant according to:

Back

The Law of Conservation of Mass

Front

Precipitate

Back

A solid formed by combining two liquids.

Front

Example of physical change: Freezing water. Example of chemical change: Burning coal.

Back

Freezing water and burning coal

Front

CO₂ + H₂O → C₆H₁₂O₆ + O₂: Reaction issue?

Back

Not balanced properly

Front

Balanced chemical equations uphold the Law of Conservation of Mass by ensuring the total amount of matter remains constant during reactions.

Back

Total matter remains constant.