Click on page as long as red bullet still exist
CHAPTER 3
MATTER
State that things have mass and occupy space
Explain the meaning of matter
Relate things and matter
Carry out activities to show that air, water, soil and
living things have mass and occupy space
3.1 Matter has mass and occupies space
Matter
What is Matter?
1. All things can be divided into matter and non-matter.
2. Anything that has mass and occupies space is matter.
Eq:
Water , air, book, soil and living things
3. Matter has weight because its mass is acted upon by
the earth’s gravity
4. Matter has volume as it occupies space
5. Examples of non-matter include:
light, sound, heat and electricity
Matter
Solid
Liquid
Gas
3 States of Matter
Solid Liquid Gas
Aspects Solid Liquid Gas
(a) Diagramatic
representation
(a) Arrangement of
particles
Closely packed
together in an
orderly
arrangement
Less compact and
not in an orderly
arrangement
Very far apart from
each other
(c) Space between
particles
Very small Small Large
(d) Movement of
particles
Vibrate / spin in
fixed positions
Move gliding past
one another
Move randomly at
fast speed
Comparison between the 3 states of matter
(e) Attractive
forces between
particles
Very strong Moderately strong Very weak
(f) Shape Definite Follows the shape
of the container
Follows the shape
of container
(g) Volume Definite Definite Occupy the
container
(h) Density High Moderate
(except Mercury)
Low
The concept of density
1. Density is defined as mass per unit volume
2. The unit for density is g/cm3. A more practical unit is kg/m3
3. In order to find the density of an irregular object
4. In order to find the density of an irregular object, we have
to find the:
- mass (by using a beam balance)
- Volume (by using water displacement method)
Density = Mass
Volume
5. The density of water is 1.0 g/cm3.
6. A substance that has a density lower than 1.0 g/cm3 will
float in water.
7. A substance that has a density higher than 1.0 g/cm3 will
sink in water
Icebergs are huge ice
formations. How much of of the
ice is actually under the water?
What is the density of ice? Is
ice denser than water?
What do you understand by the
expression ‘tip of an iceberg’?
Water
Density 1.0 g/cm3
Corn oil
Density 0.9 g/cm3
Air
density 0.001 g/cm3
glycerin
density 1.3 g/cm3
cork
density 0.24 g/cm3
ice
density 0.92 g/cm3
glass
Density 2.5 g/cm3
We choose woods we choose wood to build rafts and boats because
wood can float on water. The
density of wood is less than the density of water and so it floats.
Boat
Raft
Hot air balloon
Air is less dense than water
Do dropper test
1. 20 cm3 of a substance has a mass of 52 g.
What is its density?
Does it float or sink in water?
2.
S S
U
U
TT
2.6 g/cm3
S, U, T
SMK Perempuan Likas
Sabah