TEST Chemical Reactions and Balancing

Front

What do the blue numbers in a chemical formula represent?

Back

Subscripts, which indicate the number of atoms of each element in a molecule.

Front

What type of reaction is represented by the equation @@2Al_2O_3 ightarrow4Al+3O_2@@?

Back

Decomposition reaction, where a compound breaks down into simpler substances.

Front

What is the general form of a synthesis reaction?

Back

A + B → AB, where two or more reactants combine to form a single product.

Front

In the reaction __H2O + __CO2 --> __C7H8 + __O2, what are the coefficients for balancing?

Back

4, 7, 1, 9.

Front

What is everything to the right of the arrow in a chemical equation called?

Back

Products, which are the substances formed as a result of the reaction.

Front

What is a coefficient in a chemical equation?

Back

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

Front

What type of reaction occurs when a single compound breaks down into two or more products?

Back

Decomposition reaction.

Front

What is the difference between reactants and products in a chemical reaction?

Back

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

Front

What is a combustion reaction?

Back

A reaction that involves the burning of a substance in the presence of oxygen, producing heat and light.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.