CBA 4 Chemistry Review

Front

What does it mean if there is no subscript following an element symbol?

Back

It means there is only 1 atom of that element.

Front

What is a balanced chemical reaction?

Back

A chemical reaction is balanced when both sides have the same number of atoms.

Front

How many total atoms are in H₂SO₄?

Back

There are 7 total atoms.

Front

How many elements are present in the compound Mg₂As₃COHNi₂?

Back

There are 6 elements.

Front

What is the law of conservation of mass?

Back

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

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the number and type of atoms in a compound.

Front

What is the difference between a coefficient and a subscript in a chemical equation?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms in a molecule.

Front

What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the same number of each type of atom is present on both sides of the equation.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.