C 1.1.1 Atoms, Elements and Compounds 0.0 / 5 ? ScienceChemistryGCSEAQA Created by: ksw1102Created on: 11-06-18 16:15 How many elements are on the periodic table? 118 1 of 14 smallest part of an element that can exist atom 2 of 14 substance made from one type of atom element 3 of 14 In what 3 ways can elements exist? single atoms, molecules or giant structures 4 of 14 2 or more elements in fixed proportions that are held together by chemical bonds compound 5 of 14 4 key features of a chemical reaction 1. compounds are broken up or formed 2. at least one new substance is created 3. measurable energy change 4. No atoms are created or destroyed 6 of 14 What does the name of a compound usually end in? -ide 7 of 14 If a compound ends in -ate, what does that mean? There is one metal and 2 non-metals (one of them being oxygen) 8 of 14 What are reactants? substances undergoing a chemical reaction 9 of 14 Are the reactants on the left or right of an equation? left 10 of 14 What is a product? substance(s) that is the result of a chemical reaction 11 of 14 Is the product on the left or right of an equation? right 12 of 14 Methane (CH₄) burns in oxygen to make carbon dioxide and water. Name the reactants. Methane and oxygen 13 of 14 Methane (CH₄) burns in oxygen to make carbon dioxide and water. Name the products. Carbon dioxide and water 14 of 14
Comments
No comments have yet been made