Chemistry Review Section 2

How many atoms of sulfur are in each molecule of H₂SO₄?

• 1

• 4

• 2

• 7

Alanine is an amino acid with formula C₃H₇NO_2. How many atoms in all are in each molecule of alanine?

• 3

• 7

• 12

• 13

Which of the following accurately describes the chemical formula of the molecule shown above?

• 3CH₈O

• C₃H₇O

• C₄H₈O₂

• C₃H₈O

A diagram to a molecule is shown above. Based on the diagram, what is the identity of this compound?

• Water (H₂O)

• Hydronium (H₃O⁺)

• Hydrogen peroxide (H₂O₂)

• Hydroxide (OH^-)

Which elements are in the formula shown above?

• Cobalt only

• Carbon and Oxygen

• Copper only

• Carbon and Osmium

How many different elements are in an amino acid with the formula C₅H₁₁NO₂S?

• 5

• 20

• 18

• 4

When the number of electrons equals the number of protons the atom has what charge?

• sponge bob
• positive charge
• negative charge
• neutral charge

If my charge becomes 2+ what does that say about me?

• I am stealing 2 electrons
• I am losing 2 electrons
• I am in period 2
• I have an atomic # of 2

How does oxygen become an oxide ion?

• it loses 2 electrons

• it gains 2 electrons

Is the following compound ionic or molecular?

A material with a high melting point

• Ionic

• molecular