Chemistry Quiz

When Mg(OH)₂ reacts with H₂SO₄, what are the products? (Outcome # 1,2,6) DOK 2

• Mg(OH)₂ and H₂SO₄

• MgSO₄ and H₂O

• MgO and H₂SO₄

Which of the following is a strong acid? (Outcome # 1,3,5,9) DOK 1

• HNO₃

• CaSO₄

• NH₃

Which of the following is a strong acid when mixed in water? (Outcome # 1,2,5) DOK 1

• HClO

• HBr

• HNO₂

What are the products of the reaction between barium hydroxide and hydrogen chloride? (Outcome # 1,2,5,6,9) DOK 2

• Barium chloride and water

• Barium hydroxide and water

• Barium chloride and barium hydride

The symbol that separates the reactants from products in a reaction and means “to yield” is ________. (Outcome # 1,5,6,9) DOK 1

• +

• (s)

• →

The chemical reaction CaCO₃ →CaO + CO₂ is classified as a (Outcome # 1,9) DOK 1

• synthesis reaction

• decomposition reaction

• single-replacement reaction

How many mole ratios can be correctly obtained from the balanced chemical equation 2Al₂O₃(l) → 4Al(s) + 3O₂(g)?

• 3

• 4

• 6

Fewer steps are required to solve stoichiometry problems when:

• the amount of reactant is given in grams and the product is sought in grams.

• the amount of reactant is given in moles and the product is sought in moles.

• the amount reactant is given in grams and the product is sought in liters.

Ozone, O₃, is a product in automobile exhaust by the reaction represented by the equation NO₂(g) + O₂(g) → NO(g) + O₃(g). What mass of ozone is predicted to form from the reaction of 2.0 g NO₂ in a car’s exhaust and excess oxygen?

• 1.1 g O₃

• 1.8 g O₃

• 2.1 g O₃

A 15.0 g sample of a white, solid substance, is heated in the presence of air. The solid remaining after heating has a mass of 12.6 g. The reaction that took place must have been a/an:

• decomposition reaction

• displacement reaction

• combination reaction