Quiz #16

A student is using colored beads to make a model of aluminum sulfate, Al (SO ) 2 4 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

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

The chemical formula for sodium sulfate is Na₂SO₄. How many sulfur atoms are in the formula for sodium sulfate?

• 1

• 2

• 6

• 7

Tags

NGSS.MS-PS1-1

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

• H₃PO₄

• H₂SO₄

• HCIO₃

• H₂O

Tags

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-PS1-5

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

What number and types of atoms occur in a formula unit of the following formula

• 1 carbon atom, 1 neon atom, and 6 oxygen atoms

• 1 calcium atom, 2 neon atoms, and 3 oxygen atoms

• 1 carbon atom, 1 nitrogen atom, and 3 oxygen atoms

• 1 calcium atom, 2 nitrogen atoms, and 6 oxygen atoms

Tags

NGSS.MS-PS1-1

How many atoms of oxygen are in a molecule of glucose, C₆H₁₂O₆?

• 1

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

How many atoms are in one formula unit of magnesium hydroxide, and Mg (OH)_2?

• 6

• 5

• 4

• 3

Tags

NGSS.MS-PS1-1

The chemical formula for water is H₂O.

What does the formula show about each element in the compound?

• the number of valence electrons

• the charge of the compound

• the mass of protons in each atom

• the number of atoms of each element

Tags

NGSS.MS-PS1-1