Acid Base Salt

Define acid in terms of its properties.

• A substance that is neutral in pH.

• A substance that donates a proton in a chemical reaction.

• A substance that accepts a proton in a chemical reaction.

• A substance that is always a solid at room temperature.

What happens to the pH value when an acid is added to a basic solution?

• pH value becomes neutral

• pH value decreases

• pH value remains the same

• pH value increases

What is the role of litmus paper in testing for acids and bases?

• Litmus paper changes color to indicate whether a substance is acidic or basic.

• Litmus paper measures the temperature of acids and bases.

• Litmus paper dissolves when in contact with acids or bases.

• Litmus paper emits a sound when exposed to acids or bases.

Explain the concept of pH in relation to acids and bases.

• pH measures the temperature of a solution

• pH is a measure of the acidity or basicity of a solution, ranging from 0 to 14. Values below 7 are acidic, 7 is neutral, and above 7 are basic.

• pH above 7 indicates acidity

• pH values range from -1 to 15

Define base in terms of its properties.

• A base is a substance that can accept electrons

• A base is a substance that can donate pairs of protons

• A base is a substance that can accept protons or donate pairs of electrons.

• A base is a substance that can donate protons

What is the common characteristic of all salts?

• Covalent compound composed of cations and anions

• Metallic compound composed of cations and anions

• Organic compound composed of cations and anions

• Ionic compound composed of cations and anions

Tags

NGSS.MS-PS1-5

What is the pH value of a neutral solution?

• 8

• 7

• 5

• 10

Balance the equation H2SO4 + Ca(OH)2 -> CaSO4 + H2O.

• H2SO4 + Ca(OH)2 -> Ca2SO4 + H2O

• H2SO4 + Ca(OH)2 -> CaSO4 + H2O2

• H2SO4 + Ca(OH)2 -> CaSO4 + H2O

• H2SO4 + Ca(OH)2 -> CaSO4 + 2H2O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Give an example of a strong acid.

• Nitric acid (HNO3)

• Hydrochloric acid (HCl)

• Sulfuric acid (H2SO4)

• Acetic acid (CH3COOH)

What is the pH value of a solution with a high concentration of H+ ions?

• pH = 7

• pH > 7

• pH = 0

• pH < 7