23-24 Unit 5 Vocabulary: Chemical Reactions

Front

What is a base?

Back

A base is a substance that decreases the number of hydrogen ions in a solution and has a high pH.

Front

What is a coefficient in a chemical formula?

Back

A coefficient is a number placed in front of a chemical formula that indicates how many molecules or moles of that substance are present.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a type of chemical reaction that absorbs energy from its surroundings, often resulting in a decrease in temperature.

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances that are produced as a result of a chemical reaction.

Front

What is an acid?

Back

An acid is a substance that increases the number of hydrogen ions in a solution and has a low pH.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a type of chemical reaction that releases energy, usually in the form of heat.

Front

What is pH?

Back

pH is a scale used to measure the acidity or basicity of a solution, with lower values indicating acidity and higher values indicating basicity.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products.