Solutions, Rate of Chemical Reaction and Equilibriums

Which of the following word pairs correctly completes the sentence below?

_______ are corrosive substances characterized as having an oily feel, a bitter taste, and a _______.

• Acids; pH less than 7

• Acids; pH greater than 7

• Bases; pH greater than 7

• Bases; pH less than 7

Which of the following is an acid?

• shampoo

• baking soda

• orange juice

• water

On the pH scale what numbers are bases?

• 7-14

• 0-7

• 1

• 7

pH is the measure of the concentration of ______.

• Acids

• H⁺ ion

• OH^– ion

• Base

When an equal strength acid and base are mixed, what kind of chemical reaction occurs?

• Neutralization

• Single Replacement

• Reduction

• Synthesis

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.

• Red litmus paper turns blue when placed in a base.

• Blue litmus paper stays blue when placed in an acid.

• Red litmus paper stays red when placed in a base.

What is the gas produced when hydrochloric acid reacts with zinc?

• hydrogen

• carbon dioxide

• ammonia

• oxygen

Tags

NGSS.MS-PS1-2

Which shows a balanced chemical equation for the reaction between sulfuric acid and potassium hydroxide?

• KOH + H₂SO₄ → KSO₄ + H₂O

• K₂O + H₂SO₄ → K₂SO₄ + H₂O

• 2KOH + H₂SO₄ → K₂SO₄ + 2H₂O

• 2KOH + H₂SO₄ → K₂SO4 + H₂O

Tags

NGSS.HS-PS1-7

The maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.

• solubility

• concentration

• dilution

• surface area

Which of the following is a solution?

• soil

• carbon dioxide

• air

• chocolate chip cookie