Propertities of Matter Science 3

2. • States of matter can changes, solid to gas, gas to solid, liquid to gas, gas to liquid, liquid to
solid, solid to liquid.
• A very good example is seen in nature and that is Water Cycle.
 When heat from the sun strikes the water, water
evaporates and form water vapor (2 blue arrow
up). (liquid to gas)
 When it cools, it form into droplets and falls to the
ground in the form of rain. (gas to liquid)

3. It occurs when the temperature of the surroundings is low/cold.
Examples:
water to ice cubes
droplets to snow
Chocolate syrup to chocolate bar
Candle wax to candle
Oil to frozen oil

4. When heated or heat applied, solid changes to liquid.
Chocolate bar to syrup
Ice cubes into water
Melted butter in a pan
Melted ice cream
Candle to candle wax

5. Moth balls when exposed to air they tend to change its size into smaller
pieces.

6. Water vapor to ice - Water vapor transforms directly into ice without
becoming a liquid, a process that often occurs on windows during the
winter months.

7. matter

8.  A book can occupies space on the table. (a solid materials)
 The space that it occupies is called VOLUME.
To determine the volume, multiply the length (l),
width (w) and height (h) of an
object, or v = l x w h
 For liquid, use measuring containers like beaker or graduated cylinder.
The readings on the container is the volume of the liquids.
A solid object showing the length, width and height.

9. Stones is an irregularly shaped solid. To determine its volume, must carry
out displacement method.
Steps in the method:
1. Fill a measuring container like graduated cylinder with water. Record the
volume of the water as v1.

10. 2. Put the stones into the water in the graduated cylinder. Measure the
volume of the water again and record as v2.
3. Get the difference between the two readings to get the volume of the
stone. Vstone = v2 – v2
 For gas, use a container like bag. The space occupied is the volume of the
gas.

11. MASS – amount of matter in an object.
WEIGHT – affected by both its mass and the pull of gravity (gravityearth = 9.8
m/s2)
GRAVITY – pull of a bigger body such as planet on an object.

12.  The weight of an object on Moon is less than its weight on Earth.
However the mass remains the same.
- Example: 25 kg on Earth, when you travel to moon your mass
stills the same but you will weigh less than 25 kg due to moon’s weak
gravity.

13.  Tools that is used to measure the weight of people and goods (fish,
meat, and rice.
WEIGHING SCALE FOR
PEOPLE
COMMERCIAL WEIGHING SCALE FOR GOODS