Others

Question 1

Method to separate salt and sand mixture

Answer 1

1) Add water H2O
2) Stir to dissolve NaCl
3) Filter out sand
4) Evaporate H2O To be left with NaCl (Salt)

Question 2

Method to separate Iron and sulfur mixture

Answer 2

Hold a magnet above the mixture and they will separate

Question 3

Write the word and chemical equation for Iron and Sulfur

Answer 3

Iron. +. Sulfur Arrow Iron Sulfide

Question 4

What is the difference between burning and heating

Answer 4

When you burn something oxygen (O2) is added and when you heat something it isn’t.

Question 5

What are the magnetic metals

Answer 5

Ni Nickel
Fe Iron
Co Cobalt

Question 6

What happens to when magnesium is burnt

Answer 6

A bright white light is made

Question 7

What do you add on the end of the product to show whether it is 2 elements and oxygen or 2 elements bonded

Answer 7

…ate for 2 elements and oxygen

…ide for 2 elements bonded

Question 8

The difference between a mixture and a Compound

Answer 8

A mixture is 2 or more elements or compounds not chemically bonded or easily separated 
Air is a mixture 
O2
N2
CO2
H2O

A compound is two or more elements chemically bonded not easily separated
H2O is a compound
H2 Hydrogen
O Oxygen

Question 9

Why is some substances stored in a brown bottle

Answer 9

To prevent it reacting with sunlight

Question 10

Why is some substances stored in oil

Answer 10

To prevent it reacting with water or oxygen