AQA Chem Study guides, Class notes & Summaries

A LEVEL AQA CHEMISTRY - TRANSITION METALS

C1 Atomic Structure - CORRECT ANSWERWhat are atoms? - CORRECT ANSWER-Atoms are the particles that make up everything What is an element? - CORRECT ANSWER-An element is a substance in which all the atoms are the same Where are elements shown? - CORRECT ANSWER-Elements are shown in the Periodic table How many elements are there? - CORRECT ANSWER-There are around 118 elements What is a compound? - CORRECT ANSWER-A compound is a substance that contain two or more elements chemically combine...

AQA CHEMISTRY A LEVEL JUNE 2022 7405 PAPER 3 MARKSHEME MS

AQA June 2020 QP - Paper 2 AQA Chemistry AS-level AQA June 2020 QP - Paper 2 AQA Chemistry AS-level The equation for a reaction used to manufacture 1-chloropropane is 3CH3CH2CH2OH(l) + PCl3(l) → 3CH3CH2CH2Cl(l) + H3PO3(s) The enthalpy change for this reaction, ΔH, is –114 kJ mol–1 Table 1 contains some standard enthalpy of formation data

AQA Chemistry Paper 1 Review Practice Questions Rated A+ 2024. C1 Atomic Structure - CORRECT ANSWER What are atoms? - CORRECT ANSWER Atoms are the particles that make up everything What is an element? - CORRECT ANSWER An element is a substance in which all the atoms are the same Where are elements shown? - CORRECT ANSWER Elements are shown in the Periodic table How many elements are there? - CORRECT ANSWER There are around 118 elements What is a compound? - CORRECT ANSWER A ...

AQA COMBINED SCIENCE:TRILOGY CHEMISTRY PAPER 1H 2023 MARK SCHEME(ANSWERS) GURANTEED A+

GCSE AQA Chemistry Exam With All Answers what is a compound - ANSWER contains atoms of two or more elements which are chemically combined in fixed proportions how can compounds be separated into their component elements - ANSWER chemical reactions or electrolysis why is the total mass of products equal to the total mass of reactants - ANSWER no atoms are lost or made what is a mixture - ANSWER contains two or more elements or compounds which are not chemically...

Section A Answer all questions in this section. 0 1 This question is about atomic structure. In the nineteenth century JJ Thomson discovered the electron. He suggested that negative electrons were found throughout an atom like ‘plums in a pudding of positive charge’. Figure 1 shows an atom of element R using the ‘plum pudding’ model. An atom of R contains seven electrons. Figure 1 0 1 . 1 State two differences between the ‘pl...

2023 June QP - Paper 2 AQA Chemistry AS-level

AQA Chemistry Paper 1 with complete solutions