Chemical Formulas and Counting Atoms

Which of these substances have the same number of hydrogen atoms?

• H₅C₆PO₄

• C₆H₁₂O₆

• CH₄COOH

• CH₃CH₇

Tags

NGSS.MS-PS1-1

How many atoms of each element are in the following chemical formula? O₄(PAgNa)₂

• O = 5, P = 2, Ag = 3, Na = 2

• O = 4, P = 2, Ag = 2, Na = 2

• O = 4, P = 1, Ag = 2, Na = 7

• O = 1, P = 2, Ag = 2, Na = 2

Tags

NGSS.MS-PS1-1

Which statement is true about the following compounds?

(1) C₆H₁₂O₆

(2) C₃H₆O₃

(3) C₆H₈O₆

• Compound 1 contains 6 more Oxygen atoms than Compound 2

• Compound 2 contains twice the amount of total atoms as Compound 3

• Compound 1 contains twice the amount of total atoms as Compound 2

• Compound 1 contains 30 total atoms

Tags

NGSS.MS-PS1-1

How many atoms of each element are in this chemical formula?

CH₄COOH₂

• 2 Carbon atoms, 8 Hydrogen Atoms, 4 Oxygen atoms

• 4 Carbon atoms, 6 Hydrogen atoms, 4 Oxygen atoms

• 2 Carbon atoms, 6 Hydrogen atoms, 2 Oxygen atoms

• 1 Carbon atom, 2 Hydrogen atoms, 2 Oxygen atoms

Tags

NGSS.MS-PS1-1

How would you describe the overall charge of the nucleus in the atomic model?

• +9 (Positive Charge)

• +10 (Positive Charge)

• -9 (Negative Charge)

• No Charge

Tags

NGSS.MS-PS1-1

How do you determine the identity of an atom?

• Protons

• Protons + Neutrons

• Neutrons

• Valence Electrons

What Period would this atom be in?

• 6

• 4

• 2

• 10

Tags

NGSS.HS-PS1-1

What group on the periodic table would you find Oxygen?

• Group 1

• Group 14

• Group 16

• Group 2

Tags

NGSS.MS-PS1-1

How many atoms of Oxygen are in this compound?

K₂(MnSO₂)₄

• 4

• 8

• 2

• 6

Tags

NGSS.MS-PS1-1

How many total atoms do you have for each element in this chemical formula?

P₂OOH₂O₂H₆

• P = 2, O = 4, H = 8

• P = 1, O = 3, H = 2

• P = 2, O = 3, H = 8

• P = 2, O = 4, H = 3

Tags

NGSS.MS-PS1-1