Chemical Reactions (Types, Cons of Mass and Balancing) Review

Front

What is a chemical reaction?

Back

A process where reactants transform into products, involving the breaking and forming of chemical bonds.

Front

What are the main types of chemical reactions?

Back

1. Synthesis (Combination) 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

Front

What does the law of conservation of mass state?

Back

Matter is not created or destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

Adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What is a coefficient in a chemical equation?

Back

A number placed before a compound to indicate how many molecules or moles of that compound are involved in the reaction.

Front

What is the difference between reactants and products?

Back

Reactants are substances that undergo a chemical change, while products are the substances formed as a result of the reaction.

Front

If 4 H atoms are on the reactant side, how many H atoms will be on the product side?

Back

4

Front

Balance the following reaction: KNO3 --> KNO2 + O2. What are the coefficients?

Back

2, 2, 1

Front

Is the equation 2Fe2O3 + 3C --> 4Fe + 3CO2 balanced or unbalanced?

Back

Balanced

Front

What is the mass of magnesium fluoride produced when 24 g of magnesium reacts with 38 g of fluorine?

Back

62 g