Chemical Reactions

Front

What are reactants in a chemical reaction?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of a chemical equation.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction, found on the right side of a chemical equation.

Front

What does it mean for a chemical equation to be balanced?

Back

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

Front

What is a chemical reaction?

Back

A chemical reaction is a process in which atoms rearrange to form new substances.

Front

In the equation 2Mg + O₂ ---> 2MgO, identify the reactants.

Back

The reactants are Mg and O₂.

Front

In the equation 6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂, how many carbon atoms are on each side?

Back

There are 6 carbon atoms on each side of the reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

Front

What is the difference between a balanced and unbalanced equation?

Back

A balanced equation has equal numbers of each type of atom on both sides, while an unbalanced equation does not.

Front

What does the arrow in a chemical equation represent?

Back

The arrow in a chemical equation represents the direction of the reaction, indicating that reactants are transformed into products.