Classification of Matter

Question 0

breaks easily

Answer 0

brittle

Question 1

Materials that conduct:
Electricity
Heat

Answer 1

Electrical conductors

Thermal conductors

Question 2

can be formed into different shapes

Answer 2

malleable

Question 3

are able to be formed into long wires

Answer 3

ductile

Question 4

Mixture

Answer 4

is a combinations of two or more substances, where these substances are not bonded (or joined) to each other and no chemical reactions occurs between the substances

Question 5

in a mixture, the substances

Answer 5

are not in a fixed ratio
keep their physical properties
can be seperated by mechanical means

Question 6

Heterogeneous mixture

Answer 6

is one that consists of two or more substances. It is non-uniform and the different components of the mixture can be seen

Question 7

liquid - liquid

Answer 7

emulsion

Question 8

solid - liquid

Answer 8

suspension

Question 9

gas - liquid

Answer 9

aerosol

Question 10

gas - solid

Answer 10

smke

Question 11

Homogeneous mixture

Answer 11

is one that is uniform, and where the different components of the mixture cannot be seen

Question 12

Element

Answer 12

is a substance that cannot be broken down into other substances though chemical means

Question 13

Compound

Answer 13

a substance made up of two or more different elements that are joined together in a fixed ratio

Question 14

shiny metals

Answer 14

lustrous

Question 15

metals are heavy

Answer 15

high density

Question 16

Electrical conductor

Answer 16

is a substance that allows an electrical current to pass through it

Question 17

insulator

Answer 17

is a non-conducting material that does not carry any charge

Question 18

Magnetism

Answer 18

is a force that certain kinds of objects, which are called ‘magnetic’ objects can exert on each other without physically touching.
A magnetic object is surrounded by a magnetic ‘field’ that gets weaker as one moves further away from the object.

Question 19

if a metal can be magnetised

Answer 19

ferromagnetic

Question 20

Physical change aspects

Answer 20

particles may re-arrange themselves, but bond will not break
total number of atoms and molecules stay the same
energy changes are normally smaller than in chemical change.
easier to reverse than in chemical change.

Question 21

Chemical change aspects

Answer 21

particles change in some way
mass is conservedd, but number of molecules may change
energy changes are normally greater than in physical change.
far more difficult to reverse than in physical change

Question 22

Law of conservation of mass

Answer 22

states that the total number of substances taking part in a chemical reaction is conserved during the reaction.