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GCSE AQA Chemistry Revision

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Quiz by batmariojacob
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Last updated: May 21, 2023
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First submittedMay 21, 2023
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What are atoms with the same number of protons but with different numbers of neutrons?
What is a finite resource?
What does the state symbol (aq) indicate?
True or false: all atoms in an element are the same.
What does the state symbol (l) indicate?
The Russian Chemist who designed the periodic table.
What does the formula CaCO₃ tell you about the compund calcium carbonate?
What is a reversible reaction?
How does flammability change with the length of an alkane?
What are the products of complete combustion?
How does the amount of product and reactant change at equilibrium?
Molecule definition
What is the general formula for alkanes?
How do you test for an alkene?
What are mixtures?
The plum-pudding model of the atom
What is the formula for a mean rate of reaction in terms of products?
How does boiling point change with the length of an alkane?
If a reaction is exothermic in the forward direction, what will it be in the reverse direction?
What is 'collision theory'?
Why can alloys be harder than pure metals?
How is the relative formula mass calculated?
What is the relative formula mass (Mr)?
What is the relative atonic mass (Ar) of an element?
Why are pure metals soft?
What is nanoscience?
What is an alloy?
Reasons for alloying a metal
The first five alkanes.
What is a chemical reaction?
A mixture of two or more elements, at least one of which is a metal
A reaction which can go from reactants to products but also from products to reactants
An atom consisting of tiny negative electrons (the 'plums') surrounded by a sea of positive charge (the 'pudding')
Any elements chemically joined
Aqueous / dissolved in water
Carbon dioxide and water
CnH2n+2
Different size of atoms disturb the layers to stop them sliding over each other
Dimitri Mendeleev
Endothermic
Isotopes
It contains 1 calcium atom to 1 carbon atom to 3 oxygen atoms
Layers of metal ions are free to slide over each other
Liquid
Methane, ethane, propane, butane, pentane
Neither the product, nor the reactant change at equilibrium
One that will run out
Quantity of product formed ÷ time taken
React it with bromine water
Rearranging atoms to make new chemicals
The Ar's of the individual elements that make up the compound are added together
The longer the alkane, the higher its boiling point
The longer the alkane, the less flammable it is
The mass of a compound compared to the mass of one atom of carbon-12
The mass of an atom of the element compared to the mass of one atom of carbon-12
The study of small particles that are between 1 & 100 nanometres in size
The theory that chemical reactions only occur when particles collide with sufficient energy
To make it harder, to make it less reactive, etc.
TRUE
Two or more elements or compounds, which are not chemically combined
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