Unit 9 Review

What is pH?

• how acidic a solution is

• • 
    

    how basic a solution is

• • 
    

    the concentration of hydrogen ions in a solution

• • 
    

    the concentration of potassium ions in a solution

What is a characteristic of a base?

• tastes sour

• • turns litmus paper red

• • increases amount of hydrogen ions

• is slippery

What can a base substance do to a hydroxide ion?

• accept

• • bond with

• • donate

Which type of solution turns litmus paper red?

• an acid

• • a base

• • a neutral solution

Which substances resist pH changes?

• acids

• • bases

• • buffers

Which type of reactions form salts?

• highly acidic reactions

• • highly basic reactions

• • neutralization reactions

What do hydrogen ions (H+) and hydroxide ions (OH−) come together to form?

• an acid

• • a base

• • water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What could be used to buffer vinegar?

• salt

• • sugar

• • baking soda

Which type of reaction happens when a base is mixed with an acid?

• combustion reaction

• • neutralization reaction

• • spontaneous reaction

What can be said about a drink that tastes sour?

• It is acidic.

• • It is basic.

• • It is neutral.