Intermediate 1 Unit 1a Substances 123 4567 89 10 111213 14 15 22 2324 25 26 27 161718192021.
Intermediate 1 Unit 1b & c Reactions & Bonding 123 4567 89 10 111213 14 15 22 23242526 27...
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Transcript of Intermediate 1 Unit 1b & c Reactions & Bonding 123 4567 89 10 111213 14 15 22 23242526 27...
![Page 1: Intermediate 1 Unit 1b & c Reactions & Bonding 123 4567 89 10 111213 14 15 22 23242526 27 161718192021.](https://reader036.fdocuments.net/reader036/viewer/2022062620/551ac11455034656628b594c/html5/thumbnails/1.jpg)
Intermediate 1 Unit 1b&c
Reactions & Bonding
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What is always formed during a chemical reaction?
A new substance
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Give an example of a sign that a
chemical reaction is taking place.
Colour change, bubbling and fizzing, a solid forming,
an energy change
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What is precipitation?
A solid being formed when two solutions
react together.
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Give an example of an everyday chemical reaction.
Rusting, petrol burning, frying an egg.
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How does increasing the temperature affect the speed of a reaction?
It speeds it up
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Do larger or smaller particles speed up a reaction?
Smaller particles?
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What effect does decreasing the concentration have on the speed
of a reaction?
It slows it down
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What is a catalyst?
A substance which speeds up a chemical
reaction
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What mass of a catalyst would be left at the end of a reaction if 1g was
used.
The same - 1g
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What is an enzyme?
A catalyst which works on living things - a biological
catalyst
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Carbon dioxide and water are produced when methane burns in oxygen.
Write a word equation for this reaction.
Methane + oxygen carbon dioxide + water
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Water and sodium chloride are formed when hydrochloric acid reacts with
sodium hydroxide.Write a word equation for the reaction.
Hydrochloric acid + sodium sodium + water
hydroxide chloride
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What is an element made up of?
Atoms
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What is the number given to each element called?
Atomic number
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Are the bonds which hold the atoms together in a molecule
strong or weak?
Strong
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What is an element?
A substance made up of
identical atoms.
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What is a molecule?
A group of atoms joined together.
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Are the bonds between molecules strong or weak?
Weak
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Is the bond indicated strong or weak?
Strong
bond
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Is the bond indicated strong or weak?
Weak
bond
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What charge can an ion have?
Positive(+) or negative (-)
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What are these type of particles called?
Ions
+ - + -+ - + -
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Are the bonds between ions strong or weak?
Strong
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Write the formula for the following molecule.
C3H8O
C C C O H
H H H
H
H H H
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Write the formula for sulphur trioxide.
SO3
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Write the formula for carbon monoxide.
CO
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Write the formula for nitrogen dioxide
NO2
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Intermediate 1 Unit 1b&c
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