mid term review part 1

Front

What is a chemical reaction?

Back

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

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

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction, found on the left side of the chemical equation.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction, found on the right side of the chemical equation.

Front

What happens to atoms during a chemical change?

Back

Atoms rearrange and bond in new ways to form different substances.

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides, reflecting the Law of Conservation of Mass.

Front

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

Back

By using the subscripts in the chemical formula; for example, in H₂O, there are 2 hydrogen atoms and 1 oxygen atom.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a compound in a chemical equation to indicate how many molecules or moles are involved.

Front

What is the significance of balancing chemical equations?

Back

It ensures that the same number of each type of atom is present on both sides of the equation, adhering to the Law of Conservation of Mass.

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements and numbers to indicate the ratio of atoms.