Intro to Chemical Reactions

Front

What does the symbol (aq) represent in a chemical equation?

Back

(aq) indicates that a substance is dissolved in water.

Front

What type of change occurs when a substance transforms into a different substance?

Back

Chemical change.

Front

Define a chemical reaction.

Back

A process in which one or more substances rearrange to form a new substance.

Front

What is a chemical equation?

Back

A representation that describes a chemical reaction using symbols and formulas.

Front

What does the symbol (l) indicate in a chemical equation?

Back

(l) indicates that a substance is a liquid.

Front

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

Back

A physical change does not alter the identity of a substance, while a chemical change results in the formation of new substances.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does the law of conservation of mass state?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is an example of a chemical reaction?

Back

Burning wood, where wood (reactant) transforms into ash and gases (products).