Elemnts Compunds And Mixtures

Question 1

What is an element

Answer 1

A substance that consists of only one type of atom

Question 2

What is a molecule

Answer 2

2 or more atoms joined together

Question 3

Symbol for iron

Answer 3

Fe

Question 4

Symbol for sodium

Answer 4

Na

Question 5

Symbol for potassium

Answer 5

K

Question 6

What are the characteristics of metal

Answer 6

Strong
Good gpconductor of electricity
Shiny
Dense
High melting point
Good conductors of heat

Question 7

Characteristics of non metals

Answer 7

Dull
Low melting points
Light weight
Poor conductors of heat
Poor conductors of electricity

Question 8

Metals and non metals on periodic table

Answer 8

Stair case from edge just above aluminium left is metals and right is gases

Question 9

What is a compound

Answer 9

Substance formed when two or more elements are chemically combined

Question 10

What is a mixture

Answer 10

Two or more substances mixed together which are usually easy to sepstate

Question 11

Compound equations

Answer 11

If iron + sulfur = iron sulphide
If iron + sulfur + oxygen = iron sulphate