Chemical Reactions

Front

What is a chemical reaction?

Back

A process where substances (reactants) transform into new substances (products) through the breaking and forming of chemical bonds.

Front

What happens to atoms during a chemical reaction?

Back

Atoms are rearranged; they are neither created nor destroyed.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, the total mass of reactants equals the total mass of products.

Front

What is an endothermic reaction?

Back

A reaction that absorbs heat from its surroundings, causing a decrease in temperature.

Front

What is an exothermic reaction?

Back

A reaction that releases heat to its surroundings, causing an increase in temperature.

Front

What are reactants?

Back

Substances that undergo a chemical change in a reaction.

Front

What are products?

Back

New substances formed as a result of a chemical reaction.

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed in the process.

Front

What is a chemical equation?

Back

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

Front

What does it mean for a reaction to be balanced?

Back

A balanced reaction has the same number of each type of atom on both sides of the equation.