Counting Atoms in Chemical Formulas

Front

What does a superscript represent in a chemical formula?

Back

The oxidation number or how many electrons are lost or gained.

Front

How many oxygen atoms (O) are in a CO₂ molecule?

Back

2

Front

How many total atoms are in H₂SO₄?

Back

7

Front

How many carbon atoms are in C₁₆H₁₈?

Back

16

Front

What is the purpose of subscripts in chemical formulas?

Back

To indicate the number of atoms of each element in a molecule.

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.

Front

What does the term 'molecule' refer to?

Back

A group of two or more atoms bonded together.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

How do you determine the total number of atoms in a compound?

Back

Add the subscripts of all elements in the chemical formula.

Front

What is the significance of the coefficient in a chemical equation?

Back

It indicates the number of molecules or moles of a substance.