Year 9 End of Year Test Part 1

Question 1

What is the atomic number?

Answer 1

The number of protons in the nucleus of an atom

Question 2

What is the mass number?

Answer 2

The total number of protons and neutrons in the nucleus of an atom

Question 3

What is an isotope?

Answer 3

Atoms of the same element that have different numbers of neutrons

Question 4

How to test for water using anhydrous copper sulphate.

Answer 4

It turns from white to blue

Question 5

Ion charges of group 1

Answer 5

+1

Question 6

Ion charges of group 2

Answer 6

+2

Question 7

Ion charges of group 3

Answer 7

+3

Question 8

Ion charges of group 5

Answer 8

-3

Question 9

Ion charges of group 6

Answer 9

-2

Question 10

Ion charges of group 7

Answer 10

-1

Question 11

What are metals?

Answer 11

Elements that are good conductors of electric current and heat.

Question 12

What are non-metals?

Answer 12

Elements that are usually dull in appearance, poor conductors of heat and electricity.

Question 13

Percentage of oxygen in the atmosphere?

Answer 13

21%

Question 14

Percentage of nitrogen in the atmosphere?

Answer 14

78%

Question 15

What is the test for oxygen?

Answer 15

It will relight a glowing splint

Question 16

What is the test for carbon dioxide?

Answer 16

Limewater turns cloudy

Question 17

What is litmus paper?

Answer 17

An indicator paper that turns red in an acid and blue in a base

Question 18

Phenolphthalein

Answer 18

Indicator which is clear in acidic solution and pink in basic solution.

Question 19

Methyl orange

Answer 19

Red in acid, yellow in alkali

Question 20

What is the test for hydrogen?

Answer 20

The squeaky-pop test