Acids and Bases

Question 1

pH

Answer 1

A measure of how acidic or alkaline a solution is

Question 2

pH scale (numbers)

Answer 2

0-14

Question 3

What properties do low numbers on the pH scale have?

Answer 3

They are acidic

Question 4

What properties do high numbers on the pH scale have?

Answer 4

They are alkaline

Question 5

Where on the pH scale do neutral substances lie.

Answer 5

7

Question 6

Where would pure water lie on the pH scale?

Answer 6

7

Question 7

The two ways we measure pH?

Answer 7

• Through an indicator
• pH probe

Question 8

What is a very common type of indicator?

Answer 8

Universal indicator

Question 9

What is an indicator?

Answer 9

A group of chemical dyes that change colour depending on the pH

Question 10

Benefit of pH probe in comparison to indicator

Answer 10

Can be much more accurate and precise.

Question 11

What is an acid?

Answer 11

A substance that forms an aqueous solution with a pH less than 7

Question 12

What is a base?

Answer 12

Any substance with a pH greater than 7

Question 13

What is the name of a reaction between an acid and a base?

Answer 13

Neutralization reaction

Question 14

What will be produced from a reaction between an acid and a base?

Answer 14

Salt and water

Question 15

What should the pH of the products be (reaction between an acid and a base)

Answer 15

7

Question 16

Why is the pH of the products of a reaction between an acid and a base 7?

Answer 16

As they are NEUTRAL