kemestrie

Question 1

Where are the metals found in the periodic table?
1 On the left
2 On the right
3 Scattered all over

Answer 1

On the left

Question 2

Which of these is an element in group 2?
1 Sodium
2 Aluminium
3 Calcium

Answer 2

Calcium

Question 3

Which of the following is a general property of non-metals?
1 Shiny
2 Good conductor of heat
3 Poor conductor of electricity

Answer 3

poor conductor of elecricity

Question 4

Pure water can be separated from inky water by simple distillation because:
1 Water and ink have different boiling points
2 Water evaporates leaving the ink particles behind
3 Ink evaporates leaving the water behind

Answer 4

Water evaporates leaving the ink particles behind

Question 5

Which is the best way to get salt from salty water?
1 Evaporation
2 Filtration
3 Distillation

Answer 5

Evaporation

Question 6

What colour is very acidic on the Ph scale?

Answer 6

Red

Question 7

What category are acidic substances under?

Answer 7

Corrosive

Question 8

What happens when an acid and an alkali mix?

Answer 8

They become neuteral

Question 9

Name a naturally acidic fruit?

Answer 9

Lemon

Question 10

When 100 grams of water is boiled, what mass of steam is made?
1 95 grams
2 100 grams
3 0 grams

Answer 10

0 grams

Question 11

What is the best way to get salt/sand from water?

Answer 11

Filtiration

Question 12

On the ph scale, is 7 acidic or alkaline?

Answer 12

Neither! it is neutral