Question 1

Bases will turn litmus paper __________, while acids will turn litmus paper __________.

Accepted Answer

red.....blue

Answer

colourless..........pink

Answer

blue.....red

Answer

pink.........colourless

Question 2

The pH of a strong acid would be:

Accepted Answer

1-2

Answer

12-13

Answer

8-9

Answer

5-6

Question 3

The pH of a weak base would be:

Accepted Answer

8-9

Answer

12-13

Answer

5-6

Answer

1-2

Question 4

A high concentration of H+ ions means that the solution is

Accepted Answer

Acidic

Answer

salt

Answer

neutral

Answer

Basic

Question 5

A low concentration of H+ ions means that the solution is

Accepted Answer

Basic

Answer

Acidic

Answer

neutral

Answer

salt

Question 6

The pH scale is based off of the concentration of _________ ions.

Accepted Answer

Hydrogen

Answer

Nitrogen

Answer

Oxygen

Answer

hydroxide

Question 7

Indicator

Accepted Answer

A type of paper used to indicate the presence of acids and bases

Answer

Liquid indicator that changes pink in the presence of a base

Answer

the amount of solute dissolved in solution

Answer

a chemical that changes color in the presence of acids and changes a different color in the presence of bases

Question 8

What is the pH value of neutral substances?

Accepted Answer

7

Answer

5

Answer

9

Answer

11

Question 9

Which of the following products contains acetic acid?

Accepted Answer

Fruits

Answer

Milk

Answer

Vinegar

Answer

Washing soda

Question 10

What is the color of neutral substances with the universal indicator?

Accepted Answer

Green

Answer

Red

Answer

Purple

Answer

Yellow

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