Acids And Bases

Question 1

What’s the ph scale

Answer 1

A measure of how acidic or alkaline a solution is

Question 2

How can you measure the ph of a solution

Answer 2

Indicators, wide range indicators and a ph probe attached to a ph meter

Question 3

What’s an indicator

Answer 3

A dye that changed colour depending on whether it’s above or below a certain ph

Question 4

What’s a wide range indicator

Answer 4

Contains a mixture of dyes that gradually change colour over a wide range of ph

Question 5

Why are wide range indicators useful

Answer 5

To estimate the ph of a solution

Question 6

What is a ph probe used for

Answer 6

To measure ph electronically

Question 7

How do you use a ph probe

Answer 7

Place it in a solution and the ph is given on a digital display

Question 8

What is an acid

Answer 8

A substance that created a H+ ion when in water

Question 9

What is an alkaline

Answer 9

A substance that forms OH- ions when placed in water

Question 10

What’s the reactions between acids and alkelines

Answer 10

Neutralisation

Question 11

Equation for neutralisation

Answer 11

Acid + base > salt + water