9.1/9.2 Quiz

Describe the mass of the reactants and products given the balanced chemical reaction below. 16Al + 3S₈ → 8Al₂S₃

• The mass of the products is 2/3 that of the reactants.

• The mass of the reactants equals the mass of the product.

• The mass of the reactants is less than the mass of the product.

• The mass of the reactants is greater than the mass of the product.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

The equation H₂ + O₂ → H₂O is unbalanced. When balanced, what is the correct coefficient for O₂?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Which statement is true regarding the chemical equation below? 2CH₄ + 4O₂ → CO₂ + 4H₂O

• The equation is balanced.

• The 4 in front of the oxygen on the product side needs to be a 6 in order to be balanced.

• The 2 in front of methane, CH₄, needs to be changed to a 3 in order to be balanced.

• The carbon dioxide on the product side needs a 2 in front of it in order for it to be balanced.

Tags

NGSS.MS-PS1-5

Classify the chemical reaction below. CH₃CH₂OH + 3O₂ → 2CO₂ + 3H₂O

• double displacement

• single displacement

• combustion

• synthesis

Balance and classify the following reaction: Ba(OH)₂ + H₂SO₄ → H₂O + BaSO₄

• Balanced as written; double displacement

• Needs a coefficient of 2 for H₂O; double displacement

• Needs a coefficient of 2 for Ba(OH)₂; synthesis

• Needs a coefficient of 2 for BaSO₄; single displacement

Tags

NGSS.MS-PS1-5

What type of chemical reaction occurs when phosphorus reacts with oxygen to form diphosphorus pentoxide?

4P + 5O₂ --> 2P₂O₅

• Synthesis reaction

• Decomposition reaction

• Single replacement reaction

• Double replacement reaction

Which of the following correctly represents the balanced chemical equation for the reaction between aqueous Silver (I) Chloride and solid Copper to yield Copper (II) Chloride and Silver solid?

• 2AgCl(aq) + Cu(s) → 2Ag(s) + CuCl₂(aq)

• AgCl(aq) + Cu(s) → CuCl(aq) + Ag(s)

• AgCl₂(aq) + Cu(s) → Ag(s) + 2CuCl(aq)

• AgCl(aq) + Cu(s) → Ag₂(s) + CuCl₂(aq)

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Classify the reaction between aqueous Silver (I) Chloride and solid Copper to yield Copper (II) Chloride and Silver solid?

• Single Displacement

• Double Displacement

• Synthesis

• Decomposition

• Compbustion

When balancing the reaction C₄H₁₀ + O₂ → CO₂ + H₂O, what is the correct coefficient for O₂?

• 13

• 6

• 8

• 10

Tags

NGSS.MS-PS1-5

Classify the reaction: C₄H₁₀ + O₂ → CO₂ + H₂O.

• Combustion

• Synthesis

• Decomposition

• Single replacement