Chemical Reactions

Front

What is a chemical reaction?

Back

A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is an exothermic reaction?

Back

A chemical reaction that releases heat to its surroundings.

Front

What is an endothermic reaction?

Back

A chemical reaction that absorbs heat from its surroundings.

Front

What is a balanced chemical equation?

Back

An equation that has the same number of each type of atom on both sides, indicating that mass is conserved.

Front

How do you balance a chemical equation?

Back

By adjusting the coefficients in front of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What are reactants in a chemical reaction?

Back

The starting substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the relative amounts of reactants and products involved in the reaction.

Front

What is the difference between a single replacement reaction and a double replacement reaction?

Back

In a single replacement reaction, one element replaces another in a compound; in a double replacement reaction, the ions of two compounds exchange places.