Matter has mass and occupies sp space 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 Click on page as long as red bullet still exist ex ist
Matter
What is Matter? 1. All things things can be divided divided into into matter and and non-matter non-matter.. 2. An Any ythi thing ng th that at 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. Exam Examples ples of non-ma non-matter tter inclu include: de: light, sound, heat and electricity
Matter
Solid
Gas Liquid
3 States of Matter
Solid
Liquid
Gas
Comparison between the 3 states of matter Aspects
Solid
Liquid
Gas
(a) Arrangement Arrangement of Closely packed particles 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
(a) Diagramatic representation
(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. Densi Density ty is defined defined as as mass per per unit volum volume e Density =
Mass Volume
2. The unit unit for for densit density y is g/cm g/cm3. A more practical unit is kg/m 3 3. In order order to find the densi density ty of an irregular irregular object object 4. In order to find find the density density of an irregular irregular object, object, we have have to find the: - mass (by using using a beam beam balance) balance) - Volume (by using using water displace displacement ment method) method)
5. The density of water is 1.0 g/cm 3. 6. A substance substance that has a density lower than 1.0 g/cm 3 will float in water water.. 7. A subs substance tance that has has a density density higher than 1.0 g/cm 3 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’?
cork density 0.24 g/cm3
Air density 0.001 g/cm3
Corn oil Density 0.9 g/cm3 ice density 0.92 g/cm3 Water Density 1.0 g/cm3
glass Density 2.5 g/cm3
glycerin density 1.3 g/cm3
We choose woods we choose wood to build rafts and boats because wood can float on water. water. The density of wood is less than the density of water and so it floats.
Raft
Boat
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?
2.6 g/cm3
2. T S
U S
T U
S, U, T
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