Chemistry 0.0 / 5 ? ChemistryC1.1 - C1.5GCSEAQA Created by: JessicahenryCreated on: 13-04-16 13:04 How many atoms is an element made up of? One type of atom 1 of 18 What do compounds contain? More than one type of atom 2 of 18 How are the elements arranged into groups in the periodic table? They usually have the same properties 3 of 18 What does the nucleus contain at the centre of an atom? Two types of particle, protons and neutrons 4 of 18 What charges do protons and neutrons have? Protons have a positive charge and neutrons have no charge 5 of 18 What charge does an electron have? A negative charge 6 of 18 What is the atomic number of an element equal to? The number of protons in the nucleus of its atoms 7 of 18 What is the mass number? The number of protons + the number of neutrons 8 of 18 What are shells? Electrons in atoms are in energy levels that are represented by shells 9 of 18 Where are the electrons in the lowest energy level? In the shell closest to the nucleus 10 of 18 What do different elements form when combined? Compounds 11 of 18 What is formed when a metal reacts with a non metal? Ions are formed 12 of 18 What does the formula of a molecule show? The number of atoms in the molecule 13 of 18 What does the formula of an ionic compound show? The simplest ratio of ions 14 of 18 What happens to atoms in chemical reactions? They get re-arranged 15 of 18 What is the mass of products equal to? The mass of reactants 16 of 18 What should symbol equations always be? Balanced 17 of 18 When are atoms neither created of destroyed? In a chemical reaction 18 of 18
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