Transcript C1Topic4Starters

C1: Topic 4 Obtaining and Using
Metals
Literacy Starters
Focus: Punctuation
C1.16 Ores
Punctuate the following:
very few metals occur as elements the more
reactive a metal is the more easily it reacts
with other substances to form compounds
most metals are obtained from their
compounds by chemical reactions these
compounds which are mainly metal oxides are
found in rocks called ores ores are rocks that
contain enough of compound to extract a
metal for profit for example the ore haematite
contains enough iron oxide for it to be
profitable to extract iron from it
C1.16 Ores
Punctuate the following:
Very few metals occur as elements. The more
reactive a metal is, the more easily it reacts
with other substances to form compounds.
Most metals are obtained from their
compounds by chemical reactions. These
compounds, which are mainly metal oxides,
are found in rocks called ores. Ores are rocks
that contain enough of compound to extract a
metal for profit. For example, the ore
haematite contains enough iron oxide for it to
be profitable to extract iron from it.
C1.17 Metal Extraction
Sort out and punctuate!
• metalsandtheiroresarefoundintheearthscrust
metalswhicharelowerinthereactivityseriescanb
eextractedfromtheiroresbyheatingwithcarbon
metalswhicharehigherinthereactivityseriescan
notbeextractedbyheatingwithcarbonandneedt
obeextractedbyelectrolysis
C1.17 Metal Extraction
Sort out and punctuate!
• Metals and their ores are found in the Earth’s
crust. Metals which are lower in the reactivity
series can be extracted from their ores by
heating with carbon. Metals which are higher
in the reactivity series cannot be extracted by
heating with carbon and need to be extracted
by electrolysis.
C1.18 Oxidation and reduction
Punctuate the following:
• 1. i live in the swedish town of kiruna
• 2. its being gradually moved further north
• 3. im scared my house may be demolished or
moved
• 4. my mum doesnt know how much i want to
stay
• 5. we might have to go and stay at aunt millies
farm
• 6. i dont like staying with old relatives do you
C1.18 Oxidation and reduction
Punctuate the following:
• 1. I live in the Swedish town of Kiruna.
• 2. It’s being gradually moved further north.
• 3. I’m scared my house may be demolished or
moved.
• 4. My Mum doesn’t know how much i want to stay.
• 5. We might have to go and stay at Aunt Millie’s farm
• 6. I don’t like staying with old relatives do you?
C1.19 Place commas where needed
• 1. For most metals less energy is needed to
recycle them than is needed to extract them
from their ores.
• 2. Recycling produces less pollution. For
example sulfur dioxide is formed when lead is
extracted from the ore galena which contains
lead sulfide and carbon dioxide a greenhouse
gas is emitted when fossil fuels are used to
generate the energy for electrolysis or
reduction of ores.
C1.19 Place commas where needed
• 1. For most metals, less energy is needed to
recycle them than is needed to extract them
from their ores.
• 2. Recycling produces less pollution. For
example, sulfur dioxide is formed when lead is
extracted from the ore galena, which contains
lead sulfide, and carbon dioxide, a greenhouse
gas, is emitted when fossil fuels are used to
generate the energy for electrolysis or
reduction of ores.
C1.20 Properties of metals
Write this passage, putting in punctuation marks
where needed.
• In 1779 the worlds first cast iron bridge was built
across the river severn at coalbrookdale allowing
easier transport across the river The use of iron
as a structural material revolutionised bridge
building allowing better bridges to be built than
previously Coalbrookdale also gave the world its
first iron rails and iron wheels
C1.20 Properties of metals
Write this passage, putting in punctuation marks
where needed.
• In 1779, the world’s first cast iron bridge was built
across the River Severn at Coalbrookdale,
allowing easier transport across the river. The use
of iron as a structural material revolutionised
bridge building, allowing better bridges to be
built than previously. Coalbrookdale also gave the
world its first iron rails and iron wheels.
C1.21 Alloys
Rewrite these short passages correctly. You will
need to add either a dash -, brackets (), or a
semi colon ;
• Alloy steels are stronger than iron they need a bigger force to
break them and some resist corrosion.
• Nitinol is an alloy of nickel and titanium. It is a smart material
these materials have a property that changes with a change in
conditions, usually temperature.
• Gold is not a pure metal other metals are added to it to
improve its durability and strength.
C1.21 Alloys
Rewrite these short passages correctly. You will
need to add either a dash -, brackets (), or a
semicolon ;
• Alloy steels are stronger than iron (they need a bigger force to
break them and some resist corrosion).
• Nitinol is an alloy of nickel and titanium. It is a smart material these materials have a property that changes with a change in
conditions, usually temperature.
• Gold is not a pure metal; other metals are added to it to
improve its durability and strength.
So – when should we use dashes, brackets and
semicolons?