AQA GCSE Chemistry - Paper 1 Graded A+
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AQA GCSE Chemistry - Paper 1 Graded A+ 1. What is the charge carried by a proton? Is it positive or negative? Answer: +1 2. What is the charge of a neutron? Is it positive or negative? Answer: 0 3. What is the charge of an electron? Is it positive or negative? Answer: -1 4. What is the relative mass of a proton compared to other subatomic particles? Answer: 1 (same as the neutron) 5. How many types of atoms can an element contain? Answer: Only one type 6. What kind of subst...