Classification of matter

Question 1

What are the properties of materials?

Answer 1

Strength
Thermal conductivity
Electrical conductivity
Brittle
Malleable
Ductile
Magnetic or non-magnetic
Density
Melting point
Boiling point

Question 2

What is a mixture?

Answer 2

A combination of two or more substances in which the substances keep their own properties.

Question 3

What are the properties of mixtures?

Answer 3

Not mixed in a fixed ratio
Keep their physical properties
Can be separated by physical means

Question 4

What are the separation methods?

Answer 4

Filtration
Sieving
Evaporation
Distillation
Chromatography
Separation funnel

Question 5

What is a pure substance?

Answer 5

Consist only of one type of substance / particle which cannot be separated into simpler components using physical methods.

Question 6

What is an element?

Answer 6

Consist out of only one type of atom and cannot be separated / broken down into simpler substances

Question 7

What is a compound?

Answer 7

Consist out of 2 or more different elements chemically bonded and can be separated / broken down into simpler substances

Question 8

How do ions form?

Answer 8

When atoms gain or lose electrom

Question 9

What are the properties of metals?

Answer 9

Solid @ room temp
High melting points
Shiny
Grey
Malleable
Ductile
Good conductors of heat and electricity
Strong
Conductivity decreases when heated

Question 10

What are the properties of non-metals?

Answer 10

Mostly gas @ room temp
Low melting points
Dull
Different colours
Not malleable or ductile
Low conductivity of heat & electricity
Brittle