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7/28/2019 Science Form 1 Chapter 4 Variety of Resources
http://slidepdf.com/reader/full/science-form-1-chapter-4-variety-of-resources 1/59
Resources
on Earth
Living
things
Non livingthings
4.1 Natural Resources on
Earth
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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4.2 Understanding Element, Compound and
Mixture
Matter
Element
Metal Nonmetal
Compound Mixture
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Element• Element: a substance that consists
___________________________ only.• It is the _________________and _________
___________ by any chemical or physical
method.
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Element
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Surface
Malleability
Ductility
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Surface
• The surface of metals are __________
_____________________ compared to
nonmetals.
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Malleability
• Malleability is the __________
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Ductility
• Ductility is the _
• Metals that lack ductility __
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Heat Conductivity
• The ability to -
• Which material is easier to get hot? Metal or
nonmetal material?
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Electric conductivity
• The ability of ______
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Melting and boiling point
Density
• Most metals are ____________________therefore it requires _________________ them.
• Since metals are mostly ________, their mass
are _____________, thus their densities are all ____________.
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Compound• two or more atoms
_______________together.• __________________________________
• electrolysis or heating.
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Mixture
• combination of two or more substances
____________________ example : ________.• Example: _____________________________.
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Formation
Formation of
newsubstance
Properties
of components
Compound Mixture
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7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Examples of mixtures
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Filtration: toseparate
insoluble solids
Evaporation: toseparate
dissolved solidparticles from its
solvent
Distillation: toseparate a
solvent from aliquid or solid-liquid mixture.
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Using magnet: to
separatesubstances whichare attracted to a
magnet fromnonmagneticsubstances.
Sieving: to separate
mixture of solidsubstances withdifferent sizes.
Extraction: to
separate liquidsubstances that donot mix well and
with differentdensities
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7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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4.3 Appreciating The Importance Of The Variety Of
Earth’s Resources To Man.
Oxygen
Breathing,cellrespiratin,combustion,burning
Carbon
dioxideTo put outfire, forphotosynthesis
Soil
Habitat formany typesof livingthings
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Minerals
Soil containsminerals
and waterwhich isvital forgrowing of plants
Fossil fuels
To provideenergy forhouseholduse, factoriesand powerstations togenerateelectricity.
Water
Regulatesbody
temperature,controls theconcentrationof blood
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Living things
As food, medicine, fibre, building materials, and soon.
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• Conservation: --
• Preservation:…..
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Resources
on Earth
Livingthings
Animals
Plants
Non living
things
Air
Water
Fossil fuels
Natural
Gas
Petroleum
Coal
Soil
4.1 Natural Resources on Earth
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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4.2 Understanding Element, Compound and
Mixture
Matter
Element
Metal Nonmetal
Compound Mixture
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Video 1: Elements http://www.youtube.com/watch?v=d0zION8xjbM
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7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Element
• one type of atom only.
• simplest matter
Atom Molecule
Element
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Element
• Element: a substance that consists one type of atom
only.• It is the simplest matter and cannot be separated by
any chemical or physical method.
•
one type of atom only.• simplest matter
Atom Molecule
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Element
Metal- solid form except mercury
(liquid)
-Eg: calcium, copper, gold, lead
Non metal
-all states
(solid, liquid and gas) at roomtemperature.
-Eg: sulphur, carbon, bromine,oxygen
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Classification of Element
Element
Metal
- In solid form except formercury (liquid)
-Eg: calcium, copper, gold,lead
Non metal
-Exist in all states (solid,liquid and gas) at room
temperature.
-Eg: sulphur, carbon,bromine, oxygen
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Surface
Melting and
boiling point
Electric
Conductivity
Malleability
Ductility
HeatConductivity
Shiny
Malleable
Ductile
Good
Good
High
Dull
Not
malleable
Brittle
Weak
Do not conduct,
except Carbon
Low
DensityHigh Low
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Surface
• The surface of metals are usually shiny when
polished compared to nonmetals.
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Malleability
• Malleability is the ability of a metal to be
hammered, rolled, or pressed into various
shapes without rupture or fracture.
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Malleability
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Ductility
• Ductility is the ability of a metal to be bent or
stretched permanently without rupture or
fracture.
• Metals that lack ductility will crack or break
before bending.
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Ductility
Nonmetal- silicon Metal- aluminium
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Heat Conductivity
• The ability to transfer heat.
• Which material is easier to get hot? Metal or
nonmetal material?
Electric conductivity
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Electric conductivity• The ability of transferring electricity.
Type of
material
Light bulb
Wood/ Glass Do not light
Copper Lights up
Metal Lights up
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Melting and boiling point
Density
• Most metals are solid (except for mercury),
therefore it requires more heat to melt them.
• Since metals are mostly solids, their mass are
higher, thus their densities are all high.
Video 2: http://www.youtube.com/watch?v=anRdgl4D5KI
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Properties of metals
p // y / g
C d
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Compound• two or more atoms chemically combined
together.• separated through chemical reactions
• electrolysis or heating.
C d
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Compound• A compound is a substance that contains two
or more atoms chemically combined together.
• The components in compound can only be
separated through chemical reactions such aselectrolysis or heating.
Mixture
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Mixture
• combination of two or more substances mixed
physically; example : stirring.• Example: soil, air, petroleum, blood.
Mixture
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Mixture
• A mixture is a combination of two or more
substances that have been mixed physically;for example by stirring.
•A mixture may consists of elements,compounds or both.
Video 3: http://www.youtube.com/watch?v=cL6I1O1YHH0
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Formation
Separation
Formation of
new substance
Properties of components
Conversion of
energy
Chemically formed
New substance is
formed
New properties
Heat energy is
released
Can be separated
chemically
Physically mixed
No new substance is
formed
Retain its originalproperties
Heat energy is not
released
Can be separated
physically
Compound Mixture
Identification
of components
Components that make
up compound cannot
be identified
Components of
mixture can be
identified easily
Video 4: http://www.youtube.com/watch?v=Q62UfP-ZADY
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Electrolysis of Copper (II) Sulphate: Separating a compound
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When sugar isheated, it will be
broken into carbon
and water
Examples of mixtures
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Examples of mixtures
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Filtration: toseparate
insoluble solids
Evaporation: to
separate
dissolved solid
particles from its
solvent
Distillation: toseparate a
solvent from a
liquid or solid-
liquid mixture.
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
http://slidepdf.com/reader/full/science-form-1-chapter-4-variety-of-resources 54/59
Using magnet: to
separate
substances which
are attracted to a
magnet from
nonmagnetic
substances.
Sieving: to
separate mixture
of solid substances
with different
sizes.
Extraction: to
separate liquid
substances that do
not mix well and
with different
densities
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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Chromatography: to separate colouredcomponents in a mixture
4.3 Appreciating The Importance Of The Variety Of
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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4.3 Appreciating The Importance Of The Variety Of
Earth’s Resources To Man.
Oxygen
Breathing,cell
respiration,
combustion
, burning
Carbon dioxide
To put out fire,for
photosynthesis
Soil
Habitat formany types
of living
things
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
http://slidepdf.com/reader/full/science-form-1-chapter-4-variety-of-resources 57/59
Minerals
Soil contains
minerals and
water which
is vital for
growing of
plants
Fossil fuels
To provide
energy for
household
use, factoriesand power
stations to
generate
electricity.
Water
Regulates
body
temperature,controls the
concentration
of blood
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
http://slidepdf.com/reader/full/science-form-1-chapter-4-variety-of-resources 58/59
Living things
As food, medicine, fibre, building
materials, and so on.
7/28/2019 Science Form 1 Chapter 4 Variety of Resources
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• Conservation: involves the intelligent use and
care of our resources.
• Preservation: the act of keeping the resources
in their original state.