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MIX PAPERS :AQA GCSE REVISIONS QUESTIONS AND ANSWERS

MIX PAPERS :AQA GCSE REVISIONS QUESTIONS AND ANSWERS HIGHLY PASSED

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Types of structure: Bonding structure and the properties of matter: Chemistry: GCSE (9:1)

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Ion An atom or group of atoms that has lost or gained electrons and therefore a positive or negative charge. Polyatomic ion An ion that is made of more then one atom Metal ion an atom which has lost electrons forming a positive ion Non-metal ion an atom which has gained electrons forming nega...

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Transition elements: Atomic structure and the periodic table: Chemistry: GCSE (9:1)

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Transition elements are found In the middle block of the periodic tableRe Physical properties of transition elements Hard, high melthing points, strong and dense. Chemical properties of transition elements Slow/no reaction with oxygen, water and halogens Charges on transition metal ions Form ...

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Separating techniques: Atomic structure and the periodic table: Chemstry: GCSE (9:1)

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Mixture A combination of two or more substances that are not chemically joined. Filtration Separates insoluble solids from liquids. Crystallisation The formation of crystals by cooling a saturated solution Simple distillation Used to separate a liquid from a solution

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Reaction profile diagrams: Energy Changes: Chemistry: GCSE (9:1)

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Requirements for a reaction to take place Particles must collide, with sufficient energy Activation energy Minimum amount of energy required to start a chemical reaction Reaction profile diagram A graph which shows the change in energy of a chemical reaction Products The new substances formed...

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Naming Chemicals: Atomic structure and the periodic table: Chemstry: GCSE (9:1)

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H - Hydrogen He - Helium Fe - Iron N - Nitrogen Na - Sodium F - Fluorine Li - Lithium C - Carbon CO2 - carbon dioxide

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Metals and Redox: Chemical Changes: Chemistry: GCSE (9:1)

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Metal An element that forms positive ions pH of metal oxide Basic Non-metal Does not form positive ions pH of non-metal oxide Acidic Reduction in terms of oxygen Loss of oxygen Oxidation in terms of oxygen Gain of oxygen Oxidation in terms of electrons Loss of electrons

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Metals and non-metals: Chemistry: WJEC: GCSE (9:1)

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Metals Elements which form positive ions Non-metals Elements which do not form positive ions Metals position on periodic table on the left hand side Non-metals position on periodic table

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Ionic bonding: Bonding structure and the properties of matter: Chemistry: GCSE (9:1)

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Formation of metal ions Atoms lose outer electrons Metals Elements that form positive ions Formation of non-metal ions Atoms gain electrons Charge on non-metal ions negative Group 1 ions charge +1 Group 2 ions charge +2 Group 6 ions charge -2 Group 7 ions charge

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Group 7: Atomic structure and the periodic table: Chemistry: GCSE (9:1)

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Name of Group 7 elements The halogens Group 7 elements have similar chemical properties because they all have 7 outer shell electrons Diatomic molecule A molecule consisting of two atoms

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Geography AQA GCSE PAPER 1

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Natural Hazard - A natural hazard is a natural process which could cause death, injury or disruption to humans, or destroy proprty or posesions. Natural disaster - A natural hzard that has actualy happened Geological hazards - Caused by kand and tectonic processes Meteorological hazards - Caused...

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GCSE AQA Biology- The Eye

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Tough supporting wall of the eye - Sclera Transparent outer layer found at the front of the eye. Refracts (bends) light into the eye - Cornea Contains muscles that allow it to control the diameter of the Pupil (hole in the middle) and therefore how much light enters the eye - Iris Focuses light ...

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Foundation AQA Biology Paper

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What are the structures of an animal cell? - Nucleus, cytoplasm, cell membrane, mitochondria and ribosomes. What are the structures of a plant cell? - All structures from animal cells and cell wall, permanent vacuole and chloroplasts. What does the nucleus do? - Stores DNA and directs all cellul...

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Foundation AQA Biology Paper 1

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Elements + compounds: Atomic structure and the periodic table: Chemistry: GCSE (9:1)

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Atom Smallest part of an element Element A pure substance made of only one kind of atom Compound A substance made up of atoms of two or more different elements joined by chemical bonds Mixture A combination of two or more different substances that are not joined by chemical bonds

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Electron structure: Atomic structure and the periodic table: Chemistry: GCSE (9:1)

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First shell can hold 2 electrons 2nd and 3rd shell can hold 8 electrons no of shells = Period on the periodic table Valence electrons Outer shell electrons which are involved in reactions No of valence electrons = Group number on the periodic table Hydrogen electron structure 1 Nitrogen ...

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DT GCSE - AQA

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What are 'Mechanical Properties'? - Properties of materials, including strength, hardness, density, durability, toughness, malleability, elasticity and ductility What is 'bending'? - The ability to withstand forces that are attempting to bend What is 'compression'? - The resistance to force...

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Changing atomic model: Atomic structure and the periodic table: Chemistry: GCSE (9:1)

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Ancient greek model of the atom Atoms are tiny solid spheres which cannot be divided. JJ Thompson Discovered the electron and developed the "plum-pudding" model of the atom plum pudding model of the atom atoms are balls of positively charge with negative electrons embedded in it

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Atomic structure: Atomic structure and the periodic table: Chemstry: GCSE (9:1)

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Relative mass of a proton 1 . Relative mass of a neutron about the same as that of a proton Relative mass of an electron 1/1840 Relative charge of a proton +1 Relative charge of a neutron 0 Relative charge of an electron -1 Neutral atoms same number of positive protons as negative elec...

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Atomic structure: Chemistry AQA: GCSE (9:1)

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Relative mass of a proton 1 Relative mass of a neutron about the same as that of a proton Relative mass of an electron 1/1840 Relative charge of a proton +1 Relative charge of a neutron 0 Relative charge of an electron -1 Neutral atoms same number of positive protons as negative electro...

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AQA GCSE Triple Science - Biology

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What are eukaryotic cells? - Cells that are more complex and have a nucleus (animal and plant cells) What are prokaryotic cells? - Cells that are smaller and simpler, and don't have a nucleus but still have genetic information (bacteria) What are eukaryotes? - Organisms made of eukaryotic cells ...

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AQA GCSE Physics - Paper 1

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Energy Stores - 1) Elastic potential 2) Gravitational potential 3) Thermal 4) Electrostatic 5) Nuclear 6) Chemical 7) Kinetic 8) Magnetic 9) Light 10) Sound How is energy transferred? - 1) Mechanically - force doing work 2) Electrically - work done by moving charges 3) Heating/Radiation ...

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AQA GCSE Physics Equations

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Weight - Mass x Gravitational Field Strength Work Done - Force x Distance Force Applied to a Spring - Spring Constant x Extension Moment of a Force - Force x Distance Pressure - Force / Area

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AQA GCSE Physics

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This type of surface is a good absorber and emitter of thermal radiation - Dark, rough (matt) surface This type of surface is a bad absorber and emitter of thermal radiation - Light, shiny surface In this process particles vibrate colliding with each other passing energy along. Solids are best at...

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AQA GCSE Chemistry - Paper 1

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What is the charge of a proton? - +1 What is the charge of a neutron? - 0 What is the charge of an electron? - -1 What is the relative mass of a proton? - 1 What is the relative mass of a neutron? - 1 What is the relative mass of an electron? - Very small How many types of atoms do elements co...

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AQA GCSE Biology - Paper 1 EXAM (2024)

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What does a nucleus do? - It contains genetic material and controls the activities of the cell What does cytoplasm do? - It's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - It holds the c...

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AQA GCSE Biology Paper 2

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What is homeostasis? - The maintenance of a constant internal environment. What is a stimulus? - A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - Detect the stimulus or change in environment. What...

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AQA GCSE Biology Paper 1 - Revision Questions

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How is the real size of a magnified image calculated? - Real size = Image size ÷ Total magnification. What is a eukaryotic cell? - A cell with DNA inside a membrane bound nucleus. Prokaryotic cells do not have a nucleus. Name two differences between a plant cell and a bacterial cell? - Plant ce...

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AQA GCSE Biology Paper 1 - Revision Questions And Answers

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AQA GCSE Biology B1

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What are cells? - The building blocks of organisms Define eukaryotic cell - Cells that have a true nucleus Define prokaryotic cell - Cells that do not have a true nucleus What is in an animal cell? - Nucleus, cytoplasm, cell membrane, mitochondria, ribosomes What is in a plant cell? - Same as an...

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AQA GCSE (9-1) Business - Paper 1

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Buffer stock - A stock of raw materials held in reserve to protect the production process from unforeseen shortages. Customer loyalty - The likelihood that past customers will continue to buy from the business, enhanced by high quality customer service and/or reward programmes. Customer satisfac...

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AQA biology a-level paper 2

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describe and explain the steps in the light dependent reaction of photosynthesis - 1. photoionisation: light reaches chlorophyll in PSII, which is absorbed by an electron, which becomes excited and moves to a higher energy level. 2. the electron passes to a carrier protein in the thylakoid membra...

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AQA A-level Biology paper 1

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large molecules often contain carbon. why? - they can readily form bonds with other carbon atoms. this forms a 'backbone'. other atoms can then attach. describe benedicts test for reducing sugars - add equal volumes of the sugar sample and benedicts reagent. heat the mixture in a water bath fo...

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AQA A level Biology Revision Questions

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Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present D...

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AQA-GCSE Biology Topic 6 exams already passed

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What are chromosomes? - They are really long molecules of DNA What does DNA stand for - DeoxyribonNucleicAcid. It is a complex chemical in a thread-like chain. It contains coded information and genetic information Where is DNA found - It is found in the nucleus of animal and plant cells in long s...

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All of AQA GCSE Biology (9-1) - Paper 1

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What are the two types of microscopes? - Light Microscope Electron Microscope What is the magnifying power of a light microscope? - x 2,000 What is the magnifying power of an electron microscope? - x 2,000,000 What is the resolving power? - The ability to distinguish between two separate points ...

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7. AQA GCSE Biology: Ecology

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Ecosystem - The interaction of a community of living organisms with the non-living parts of their environment What is a community made up of? - The populations of different species or organisms that are all interdependent in a habitat Habitat - The environment in which an organism lives Populat...

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MIX PAPERS :AQA GCSE REVISIONS QUESTIONS AND ANSWERS

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