PH scale

Question 1

What ions are formed by acids?

Answer 1

Hydrogen ions (H+) in aqueous solutions.

Question 2

What ions are formed by alkalines?

Answer 2

An alkali forms hydroxide ions (OH-) when dissolved in water.

Question 3

What is a base that dissolves in water?

Answer 3

An alkaline

Question 4

What is a base?

Answer 4

A substance such as metal oxides or metal hydroxides that neutralise acids and produce salt and water.

Question 5

Example of acids:

Answer 5

Hydrochloric acid
sulfuric acid
nitric acid

Question 6

Example of bases

Answer 6

Copper oxides
iron hydroxides
sodium hydroxides which is also an alkaline.

Question 7

On the ph scale point out alkaline neutral and acidic.

Answer 7

everything above 7 is alkaline
7 is neutral
everything below 7 is acidic

Question 8

How can you measure PH?

Answer 8

You can use a PH probe or a universal indicator which changes regarding the acidity or alkalinity or neutrality of the substance.

Question 9

How do you use a PH probe to measure the PH scale?

Answer 9

1) wash the probe with water so that it is at neutral.
2) adjust the reading to match the buffer solution and calibrate a couple of times.(to get an accurate reading)
3) then wash and place it in the solution.