Unit 3 Review IPC

What is the typical number of electrons in the outer shell of a stable atom, excluding hydrogen and helium?

• 2

• 5

• 6

• 8

a chemical reaction that releases energy by light or heat

• Endothermic Reaction
• Exothermic Reaction
• Diffusion
• Fission

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

During the combustion of methane with oxygen, carbon dioxide and water are produced. If 16 g of methane reacts completely with 64 g of oxygen to yield 44 g of carbon dioxide, what is the mass of water formed?

• 36 g of H₂O

• 18 g of H₂O

• 72 g of H₂O

• 28 g of H₂O

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which factors increase the rate of a reaction.

• increasing temperature
• increasing concentration
• increasing surface area
• all of these

Tags

NGSS.HS-PS1-5

Consider the following unbalanced chemical equations involved in the production of sulfuric acid, which can negatively impact the environment. Part #1: SO₂ + O₂ → SO₃ Part #2: SO₃ + H₂O → H₂SO₄ What is the correctly balanced equation for Part #2?

• SO₃ + H₂O → H₂SO₄

• 2SO₃ + H₂O → 2H₂SO₄

• SO₃ + 2H₂O → H₂SO₄

• 2SO₃ + 2H₂O → 2H₂SO₄

Tags

NGSS.MS-PS1-5

The law of conservation of mass states that....

• Matter can be made
• Matter can be destroyed
• Matter can neither be made or destroyed
• Matter can evaporate

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

When hydrogen peroxide (H₂O₂) is exposed to light, it breaks down into oxygen gas (O₂) and water (H₂O). 2H₂O₂ → O₂ + 2H₂O Which side of the equation shows the reactant(s) of this reaction?

• The left side, H₂O₂ is a reactant

• The right side, H₂O₂ is a product

• The left side, O₂ and H₂O are reactants

• The right side, O₂ and H₂O are products

Tags

NGSS.MS-PS1-2

Which of the following is NOT evidence that a chemical reaction occurred?

• Change in color

• Production of gas

• Shiny surface

• Odor

Tags

NGSS.MS-PS1-2

Balance the following chemical equation: __ Na + __ O₂ → __ Na₂O. What is the coefficient for Na when the equation is balanced?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Is this balanced?
Al + O₂ → 2Al₂O₃

• Yes
• No

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2