Acids and Bases Exam

Which of the following is a characteristic of acids?

• Bitter taste

• Slippery feel

• Sour taste

• Turns litmus blue

What is one way to identify an acid?

• Touch it

• Taste it

• using litmus paper

• Look at it.

Which of the following is a strong base?

• Ammonia NH₃

• Sodium hypochlorite(Bleach)

• Drain Cleaner

• Magnesium hydroxide Mg(OH)₂

What color does phenolphthalein turn in a basic solution?

• Colorless

• Pink

• Blue

• Yellow

The pH scale ranges from:

• 0 to 10

• 0 to 14

• 1 to 14

• 1 to 10

An acid is defined as a substance that:

• donates protons (H+) in a solution.

• accepts protons (H+) in a solution.

• donates electrons in a solution.

• accepts electrons in a solution.

A base is defined as a substance that:

• donates protons

• accepts protons

• donates electrons

• accepts electrons

The pH scale is a measure of:

• acidity or alkalinity of a solution

• temperature of a solution

• pressure of a gas

• density of a liquid

Define neutralization.

• Neutralization is a chemical reaction in which an acid and a base react to form water and a salt.

• Neutralization is the process of making a solution more acidic.

• Neutralization is the process of making a solution more basic.

• Neutralization is a chemical reaction in which two acids react to form a base.

An amphoteric substance is one that:

• can act as both an acid and a base

• is always neutral

• only acts as an acid

• only acts as a base

Tags

NGSS.HS-PS1-1