01.
|
i |
ii |
iii |
iv |
v |
|
A |
A |
A |
C |
D |
02.
i)
Matter is anything that has mass and occupies space.
ii)
Melting point is the temperature at which a solid melts to
form a liquid.
iii)
Boiling point is the temperature at which a liquid boils to
form a gas.
iv)
A chemical change is the change where a new substance is
formed. It involves the chemical properties of matter.
v)
A physical change is a change where no new substance is
formed. It involves the physical properties of matter.
03.
A –
Melting/Heating
B – Cooling/
Freezing
C – Deposition
D –
Sublimation
E –
Condensation
F –
Boiling/Evaporation
04. Differences between chemical and
physical change
|
Chemical change |
Physical change |
|
A new substance is formed |
No new substance formed |
|
The change is irreversible |
The change is reversible |
|
It involves the chemical properties of
matter |
It involves the physical properties of
matter |
|
Some products such as gases may be
given off |
No product is given off |
|
It affects the composition of the
substance as new products are formed |
It does not affect the composition of
the substance |
