8.5 D

The table lists some compounds found in foods and their formulas.

Based on this information, which of these statements is NOT true?

• A molecule of sorbitol contains three more oxygen atoms then a molecule of glutamine does.

• A molecule of lactose contains twice as many atoms as a molecule of fructose does.

• A molecule of fructose contains four more atoms than a molecule of glutamine does.

• A molecule of lactose contains twice as many carbon atoms as a molecule of sorbitol does.

Tags

NGSS.MS-PS1-1

A student is using colored breads to make a model of aluminum sulfate, Al₂(SO₄)₃. Aluminum atoms are represented by blue beads, sulfur atoms by yellow beads, and oxygen atoms by green beads.

What combination of beads should the student use for the model?

• 6 blue, 3 yellow, and 7 green

• 2 blue, 1 yellow, and 4 green

• 2 blue, 3 yellow, and 12 green

• 6 blue, 12 yellow, and 12 green

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NGSS.MS-PS1-1

Strontium phosphate, Sr₃(PO₄)₂, is a crystalline substance used in medicince and industry. How many phosphorus atoms are represented in the formula for Sr₃(PO₄)₂?

• 2

• 3

• 4

• 8

Tags

NGSS.MS-PS1-1

The table shows the chemical formulas for four substances.

Which substances have the same number of carbon atoms?

• Substances 1 and 2

• Substances 2, 3, and 4

• Substances 2 and 3 only

• Substances 1 and 3

Tags

NGSS.MS-PS1-1

Which of these formulas contain equal numbers of nitrogen atoms?

• Formulas I and III

• Formulas I and IV

• Formulas II and III

• Formulas I, II, and V

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NGSS.MS-PS1-1

The equation represents a chemical reaction that occurs in living cells.

How many atoms are represented in the reactants of this equation?

• 6

• 12

• 24

• 36

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

• H₃PO₄

• H₂SO₄

• HClO3

• H₂O

Tags

NGSS.MS-PS1-1

the chemicalformula for sodium sufate is Na₂SO₄. How many sulfur atoms are in the formula for sodium sulfate?

• 1

• 2

• 6

• 7

Tags

NGSS.MS-PS1-1

Serotonin is a chemical substance that acts as a neurotransmitter. It helps relay messages in the human brain. The formula for one molecule of serotonin is shown.

C₁₀H₁₂N₂O

How many atoms in all are in a molecule of serotonin?

• 10

• 25

• 24

• 12

Tags

NGSS.MS-PS1-1

Which information could a student determine from only the chemical formula of a protein?

• The color of the protein

• The number of molecules in each sequence that makes up a protein

• The physical arrangement of atoms in the structure of the protein

• The number of atoms of each element in the protein

Tags

NGSS.MS-PS1-1