ACID AND BASE

Solutions that have more H+ ions than OH- ions are

• acids

• base

• enzymes

• neutral

A scientist runs tests on an unknown substance. He finds that it is extremely corrosive. It produces H+ ions in solution. And, it has a pH of 1. What type of substance has he identified?

• weak acid

• strong acid

• weak base

• strong base

Which of the following is the strongest acid?

• soap - 10

• HCL - 1

• blood - 7.45

• soft drink - 3

Which of the following is the weakest base?

• oven cleaner - 13.5

• lemon juice - 2.5

• soap - 10

• blood - 7.4

What type of solution is formed when the H+ ions equal the OH- ions?

• acidic

• basic or alkaline

• neutral

• enzymatic

When found in food, bases are _______.

• sour

• bitter

• salty

• soggy

What color does acid turn litmus paper?

• It turns litmus paper purple.

• It turns red litmus paper blue.

• It turns blue litmus paper blue.

• It turns blue litmus paper red.

What color does bases turn litmus paper?

• It turns litmus paper purple.

• It turns blue litmus paper red.

• It turns red litmus paper blue

• It turns red litmus paper red

A pH scale is...

• A corrosive substance that says a substance is an acid

• An indicator that tells if a substance is an acid or base.

• A blue litmus paper

• A red litmus paper.

Drain cleaner has a pH of 13. What is drain cleaner?

• A strong base.

• An acid.

• Neutral.

• A weak base.