AQA GCSE Chemistry - Paper 1 Exam Questions with 100% Correct Answers

What is the charge of a proton? - ANSWER-+1 What is the charge of a neutron? - ANSWER-0 What is the charge of an electron? - ANSWER--1 What is the relative mass of a proton? - ANSWER-1 What is the relative mass of a neutron? - ANSWER-1 What is the relative mass of an electron? - ANSWER-Very small How many types of atoms do elements contain? - ANSWER-Only one type What are compounds? - ANSWER-Substances containing two or more different elements that are chemically bonded together What are mixtures? - ANSWER-Substances containing two or more different elements that are not chemically bonded together What pattern is formed from carrying out paper chromatography? - ANSWER-Chromatogram Which method of separation is useful to separate an insoluble solid from a liquid? - ANSWER-Filtration Which method of separation is useful to separate a soluble solid from a liquid? - ANSWER-Evaporation or Crystillization Which method of distillation separates liquids with similar boiling points? - ANSWER-Fractional distillation Who discovered that the plum pudding model was wrong? - ANSWER-Ernest Rutherford Who devised an experiment that proved the existence of the neutron? - ANSWER-Niels Bohr Why did Mendeleev leave gaps in his Table of Elements? - ANSWER-To ensure that elements with similar properties stayed in the same groups. The gaps indicated the