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How man atoms of carbon are there?

• 1

• 2

• 3

• 4

How many atoms of Iron are in this compound?

• 1

• 2

• 3

• 4

How many atoms of hydrogen are in

C₆H₁₂O₆

• 6

• 12

• 18

• 2

A substance made up of atoms of two or more different elements joined by chemical bonds

• Molecule

• compound

• polar covalent bond

• nonpolar covalent bond

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

How many total POTASSIUM atoms are in this formula?

• 8

• 2

• 4

• 12

• 1

• 2

• 3

• 4

Coefficients in chemical formulas...

• Multiply just the first atom

• Add to the subscripts at the end of the molecule

• Multiply elements without subscripts

• Multiply EVERYTHING!

C₃H₅(NO₃)₃

• C = 3, H = 5, N = 3, O = 9

• C = 3, H = 5, N = 1, O = 9

• C = 9, H = 15, N = 3, O = 9

• C = 9, H = 15, N = 1, O = 3