Complete Chemistry paper 1 Revision Bundle.

▪ Potassium manganate (VII) and water (purple colour spreads), ammonia and hydrogen chloride (white ring forms closer to hydrogen chloride), bromine gas and air (brown bromine gas diffuses) - Ans .3 experiments to show diffusion ▪ 4OH- = O2 + 2H2O + 4E- - Ans .Half equation for hydroxide io...

▪ How acidic or alkali something is. - Ans .What does the pH scale tell you? ▪ one to six - Ans .What's the pH range for acids? ▪ 7 - Ans .What's the pH of a neutral solution? ▪ Eight to Fourteen - Ans .What's the pH range of an alkali solution? ▪ H+ - Ans .Which ion in an aqueous s...

What is the radius of an atom? - Ans .0.1 nanometers Where is the nucleus located? - Ans .center of the atom What does the nucleus contain? - Ans .protons and neutrons What charge does a proton have? - Ans .positive What charge does an electron have? - Ans .negative What is the mass of an elect...

1. What are *atoms*? - Ans .The smallest part of an element that can exist 2. What are *compounds*? - Ans .- They are formed from elements by chemical reactions - Contain 2 or more elements chemically combined in fixed proportions - Can only be separated into elements by chemical reactions 3. Wh...

What is an atom? - Ans .Smallest part of an element that can exist ▪ What is an element? - Ans .A substance made up of one type of atom ▪ How are elements represented? - Ans .Using symbols, in the periodic table ▪ Approximately how many elements are there? - Ans .100 ▪ What is a compound...

1. What is a mixture? - Ans .Two or more elements not chemically bonded 2. What is the difference between a compound and a mixture? - Ans .Compounds have a fixed composition whereas mixtures do not. Mixtures are not chemically bonded but compounds are. 3. Describe the process of filtration - Ans...

What is an *atom*? - Ans .smallest part of an element ▪ What is an *element*? - Ans .a substance that contains only one type of atom ▪ What are *chemical symbols*? - Ans .- the letter or pair of letters that represents an element. o first letter is always capitalized ▪ What are *compound...

▪ mass - Ans .mr x moles ▪ Avogadro constant - Ans .6.02 x 10²³ ▪ conservation of mass - Ans .total mass of products = total mass of reactants ▪ volume - Ans .mol x 24dm³ ▪ concentration - Ans .mol / volume (dm³) ▪ percentage yield - Ans .yield from reaction/yield meant to be x ...

What are the properties of group 1 metals? - Ans .Can be cut with a knife Shiny, but tarnish quickly with air, because a layer of oxide is formed Good conductors of electricity (Like all metals) Low density Low melting point What are the properties of group 7? - Ans .• All gain an electron du...

1. How long is Paper 1, and what does it assess? - Ans .Paper 1 of the AQA GCSE Higher Chemistry (Single Science) course lasts for 1 hour and 45 minutes, and assesses content from Atomic Structure & The Periodic Table; Bonding, Structure & The Properties of Matter; Quantitative Chemistry, Chem...

What are the 3 states of matter? - Ans .Solid, liquid and gas What is the process for extracting iron form its ore? - Ans .Heat it with carbon (coke) in a blast furnace Why is carbon used for extracting iron from ore? - Ans .It is more reactive What is chromatography used to separate? - Ans .A ...

What is an element? - Ans .A substance that contains only one type of atom Atom - Ans .Smallest particle of an element Isotope - Ans .each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relativ...

*Chromatography* - Ans .-Chromatography is a method used by chemists to separate out mixtures. -Chromatography works because different dyes move up the paper and different rates. -Some will stick to the paper and others will dissolve more readily in the solvent and travel more quickly. -You ...

atom - Ans .smallest particle of an element proton - Ans .- positively charged particle - has a mass of 1 and a charge of +1 - found in the nucleus of the atom. neutron - Ans .- has no charge(neutral) and a mass of 1. - found in the nucleus of an atom electron - Ans .- a negatively charged p...