Practice: Interpreting Chemical Formulas

For the chemical formula H₂O₂, which of the following lists the elements and the number of atoms of each element correctly?

• Hydrogen: 2, Oxygen: 2

• Hydrogen: 1, Oxygen: 2

• Hydrogen: 2, Oxygen: 1

• Hydrogen: 1, Oxygen: 1

Tags

NGSS.MS-PS1-1

For the chemical formula Ba₃N₂, list: (1) the elements in it and (2) how many atoms there are of each element.

• Ba: 3, N: 2

• Ba: 2, N: 3

• Ba: 1, N: 2

• Ba: 3, N: 1

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

For the chemical formula C₆H₁₂O₆, which of the following lists the elements and the number of atoms of each element correctly?

• C: 6, H: 12, O: 6

• C: 12, H: 6, O: 6

• C: 6, H: 6, O: 12

• C: 12, H: 12, O: 6

Tags

NGSS.MS-PS1-1

For the chemical formula BaCl₂, determine how many atoms there are of each element.

• Ba: 2, Cl: 1

• Ba: 1, Cl: 3

• Ba: 0, Cl: 2

• Ba: 1, Cl: 2

Tags

NGSS.MS-PS1-1

For the chemical formula CH₄, which of the following lists the elements and the number of atoms of each element correctly?

• Carbon: 1, Hydrogen: 4

• Carbon: 4, Hydrogen: 1

• Carbon: 2, Hydrogen: 2

• Carbon: 1, Hydrogen: 1

Tags

NGSS.MS-PS1-1

For the chemical formula Pb(NO₃)₂, which of the following lists the elements and the number of atoms of each element correctly?

• Pb: 1, N: 2, O: 6

• Pb: 1, N: 1, O: 3

• Pb: 2, N: 2, O: 6

• Pb: 1, N: 2, O: 3

Tags

NGSS.MS-PS1-1

For the chemical formula (NH₄)₂S, which of the following lists the elements and the number of atoms of each element correctly?

• N: 2, H: 8, S: 1

• N: 1, H: 4, S: 2

• N: 2, H: 4, S: 1

• N: 1, H: 8, S: 2

Tags

NGSS.MS-PS1-1

For the chemical formula Cr(C₂H₃O₂)₂, which of the following lists the elements and the number of atoms of each element correctly?

• Cr: 1, C: 4, H: 6, O: 4

• Cr: 1, C: 2, H: 3, O: 2

• Cr: 2, C: 4, H: 6, O: 4

• Cr: 1, C: 2, H: 3, O: 4

Tags

NGSS.MS-PS1-1

For the chemical formula Mg₃(PO₄)₂, which of the following lists the elements and the number of atoms of each element correctly?

• Mg: 3, P: 2, O: 8

• Mg: 3, P: 1, O: 4

• Mg: 1, P: 2, O: 8

• Mg: 3, P: 2, O: 4

Tags

NGSS.MS-PS1-1

For the chemical formula CH₃COOH, which of the following lists the elements and the number of atoms of each element correctly?

• C: 2, H: 4, O: 2

• C: 1, H: 3, O: 2

• C: 2, H: 3, O: 2

• C: 1, H: 4, O: 2

Tags

NGSS.MS-PS1-1