AQA Study guides, Class notes & Summaries

AQA A - LEVEL BIOLOGY PAPER 1 TOPIC 1 - 4 EXAM GUIDE QNS & ANS JUNE 2024AQA A - LEVEL BIOLOGY PAPER 1 TOPIC 1 - 4 EXAM GUIDE QNS & ANS JUNE 2024

AQA AS BIOLOGY PAPER 2 TOPIC 1 - 4 EXAM GUIDE QNS & ANS MAY 2024AQA AS BIOLOGY PAPER 2 TOPIC 1 - 4 EXAM GUIDE QNS & ANS MAY 2024AQA AS BIOLOGY PAPER 2 TOPIC 1 - 4 EXAM GUIDE QNS & ANS MAY 2024

AQA A - LEVEL ENVIRONMENTAL SCIENCE PAPER 2 SECTION 5 - 7 EXAM GUIDE QNS & ANSAQA A - LEVEL ENVIRONMENTAL SCIENCE PAPER 2 SECTION 5 - 7 EXAM GUIDE QNS & ANS

AQA B1 CORE 255 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|ALREADY GRADED A+ Allele - ANSWER- A form of a particular gene; may affect the way in which that gene functions in the organism. Antibiotic - ANSWER- A chemical drug that can kill bacteria or stop them from growing but that is safe to use in people or animals. Antibiotic resistance - ANSWER- Genetic changes caused by rare mutation, that cause some bacteria to become unaffected by specific antibiotics. ...

AS-level AQA Chemistry questions and answers What is the charge of a proton? - ANSWERS +1 What is the charge of a neutron? - ANSWERS 0 What is the charge of an electron? - ANSWERS -1 What is the mass of a proton? - ANSWERS 1 What is the mass of a neutron? - ANSWERS 1 What is the mass of an electron? - ANSWERS 1/1800 What is an isotope? - ANSWERS Isotopes of an element are atoms with the same number of protons but different numbers of neutrons. Why do isotopes of an element all have t...

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...

AQA AS Organic Chemistry exam questions with 100% correct answers Define the term 'empirical formula' - ANSWERS A formula that gives the simplist whole number ration of atoms of each element in a compound Define the term 'molecular formula' - ANSWERS A way of representing molecules that shows the actual number of atoms of each element in a molecule Define the term 'General formula' - ANSWERS An algebraic formula that can describe any member of a family of compounds Define the t...

AQA AS level Chemistry exam 2024 questions with 100% correct answers Nucleons - ANSWERS Protons and neutrons Electrons (location) - ANSWERS Surrounding the nucleus Relative mass of an electron - ANSWERS 1/1840 Strong nuclear force - ANSWERS The way protons and neutrons are held together in the nucleus Electrostatic forces - ANSWERS The attraction between protons and electrons that hold them together in the atom Atomic Number (Z) - ANSWERS The number of protons in the nucleus Mass nu...

AQA 2023 AS CHEMISTRY QUESTIONS WITH 100% CORRECT ANSWERS Absolute temperature - ANSWERS Temperature measured in Kelvin Absolute zero - ANSWERS The lowest possible temperature theoretically achieveable - 273.15 degrees celius or zero Kelvin Acceleration - ANSWERS The stage in mass spectrometry where positive ions are speeded up by an electric field Acid rain - ANSWERS Rain that has been acidified by pollutants such as sulfur dioxide Actual yield - ANSWERS Mass of product obtained in a ...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...