1st Semester Exam Practice

Front

What is the process called when oxygen gas combines with another compound to form water and carbon dioxide?

Back

Combustion

Front

What is a number placed before a variable that multiplies it called?

Back

Coefficient

Front

What is defined as anything that has mass and takes up space?

Back

Matter

Front

What type of reaction occurs when the more reactive element replaces the least reactive in a compound?

Back

Single Replacement

Front

What type of change occurs when energy is absorbed in the form of heat or light?

Back

Endothermic Change

Front

What is the term for a substance that speeds up a chemical reaction without being consumed?

Back

Catalyst

Front

What is the law that states that mass is neither created nor destroyed in a chemical reaction?

Back

Law of Conservation of Mass

Front

What is the term for the substances that are present before a chemical reaction occurs?

Back

Reactants

Front

What do we call the substances that are produced as a result of a chemical reaction?

Back

Products

Front

What is the term for a reaction that releases energy in the form of heat?

Back

Exothermic Change