Statistics for GCSE AQA Chemistry Revision

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General Stats

This quiz has been taken 58 times
The average score is 21 of 30

Answer Stats

Hint	Answer	% Correct
The Russian Chemist who designed the periodic table.	Dimitri Mendeleev	95%
True or false: all atoms in an element are the same.	TRUE	93%
What does the state symbol (aq) indicate?	Aqueous / dissolved in water	89%
What are atoms with the same number of protons but with different numbers of neutrons?	Isotopes	89%
What does the state symbol (l) indicate?	Liquid	89%
What is a finite resource?	One that will run out	89%
What is a reversible reaction?	A reaction which can go from reactants to products but also from products to reactants	86%
What does the formula CaCO₃ tell you about the compund calcium carbonate?	It contains 1 calcium atom to 1 carbon atom to 3 oxygen atoms	86%
If a reaction is exothermic in the forward direction, what will it be in the reverse direction?	Endothermic	80%
How does boiling point change with the length of an alkane?	The longer the alkane, the higher its boiling point	80%
The plum-pudding model of the atom	An atom consisting of tiny negative electrons (the 'plums') surrounded by a sea of positive charge (the 'pudding')	77%
What is 'collision theory'?	The theory that chemical reactions only occur when particles collide with sufficient energy	75%
What is the general formula for alkanes?	CnH2n+2	73%
How does the amount of product and reactant change at equilibrium?	Neither the product, nor the reactant change at equilibrium	73%
What is an alloy?	A mixture of two or more elements, at least one of which is a metal	68%
The first five alkanes.	Methane, ethane, propane, butane, pentane	68%
What is the formula for a mean rate of reaction in terms of products?	Quantity of product formed ÷ time taken	66%
How do you test for an alkene?	React it with bromine water	61%
How does flammability change with the length of an alkane?	The longer the alkane, the less flammable it is	61%
What are the products of complete combustion?	Carbon dioxide and water	59%
Why are pure metals soft?	Layers of metal ions are free to slide over each other	59%
What is nanoscience?	The study of small particles that are between 1 & 100 nanometres in size	59%
Why can alloys be harder than pure metals?	Different size of atoms disturb the layers to stop them sliding over each other	55%
How is the relative formula mass calculated?	The Ar's of the individual elements that make up the compound are added together	55%
What is the relative atonic mass (Ar) of an element?	The mass of an atom of the element compared to the mass of one atom of carbon-12	55%
Reasons for alloying a metal	To make it harder, to make it less reactive, etc.	55%
What is a chemical reaction?	Rearranging atoms to make new chemicals	50%
What are mixtures?	Two or more elements or compounds, which are not chemically combined	43%
Molecule definition	Any elements chemically joined	34%
What is the relative formula mass (Mr)?	The mass of a compound compared to the mass of one atom of carbon-12	32%