Energy in Reactions and Acids/Bases

Front

What is a chemical reaction?

Back

A process where substances (reactants) transform into new substances (products) with different properties.

Front

What indicates that a chemical reaction has occurred?

Back

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

Front

What is pH?

Back

A scale ranging from 0 to 14 that measures how acidic or basic a solution is.

Front

What pH value indicates a strong acid?

Back

A pH value of 0 to 3 indicates a strong acid.

Front

What do acids produce when dissolved in water?

Back

Acids produce hydrogen ions (H+) when dissolved in water.

Front

What color does litmus paper turn in a basic solution?

Back

Litmus paper turns blue in a basic solution.

Front

What is a base?

Back

A substance that accepts hydrogen ions (H+) and can produce hydroxide ions (OH-) in solution.

Front

What is a neutral solution?

Back

A solution with a pH of 7, indicating it is neither acidic nor basic.

Front

What is rust?

Back

A chemical compound formed when iron reacts with oxygen and moisture, indicating a chemical reaction.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.