Chemical Reaction Review

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 are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

Front

What does the law of conservation of mass state?

Back

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

Front

How do you determine the number of atoms in a molecule?

Back

Count the subscripts in the chemical formula; if no subscript is present, it is assumed to be 1.

Front

What is a coefficient in a chemical equation?

Back

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 a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both the reactant and product sides.

Front

What is the significance of balancing chemical equations?

Back

It ensures that the law of conservation of mass is upheld, showing that matter is conserved in a reaction.

Front

What is a molecular formula?

Back

A formula that shows the actual number of atoms of each element in a molecule.

Front

What is a structural formula?

Back

A formula that shows the arrangement of atoms in a molecule, including the bonds between them.