C1 1.1 - 1.5 4.0 / 5 based on 1 rating ? ChemistryAtoms and compoundsGCSEAQA Created by: jennythepandaCreated on: 19-10-15 21:56 What are all substances made from? Atoms 1 of 25 How many different types of atoms are there 100 2 of 25 Around the nucleus, in energy levels, there are ________ Electrons 3 of 25 In the nucleus of an atom you can find _____ and _____ Protons / Neutrons (or vice versa) 4 of 25 What charge do electrons have? - 1 5 of 25 What charge do protons have? + 1 6 of 25 What charge do neutrons have? 0 7 of 25 Why are atoms always neutral? The electron number = proton number so they cancel each other out. Neutrons have a zero charge also so overall there is no charge. 8 of 25 What can proton number also be called? Atomic Number 9 of 25 How do you calculate mass number? proton number + neutron number 10 of 25 What is the pattern for the first three energy levels? 2,8,8 11 of 25 What do atoms in the same group share in common? The same number of electrons on their outermost energy level 12 of 25 What is special about neon and argon? They are nobel gases (they have full outermost shells). 13 of 25 How are ions formed? When a metal bonds with a non-metal 14 of 25 What charge do metal ions form? positively charged ions 15 of 25 What charge do non-metal ions form? negatively charged ions. 16 of 25 What is the name of the bond between the metal and non-metal ions? Ionic bond 17 of 25 Why do the metal and non-metal compounds have no overall charge? the charges of the ion cancel each other out. 18 of 25 How are covalent bonds formed? When two or more non-metals bond. 19 of 25 What is a covalent bond? When two + non-metals share their electrons on their outermost shells. 20 of 25 Metal ions form _____ ions because they ______ one or more electrons when they bond with a non-metal positive / lose 21 of 25 Non-metals atoms ______ electrons in the reaction, forming ______ ions gain / negative 22 of 25 When non-metals combine with each other, they form ______ bonds. Their atoms _____ electrons covalent / share 23 of 25 What happens in a positive test for hydrogen gas? A lightened wooden splint makes a popping sound 24 of 25 Why must all symbol equations be balanced? Atoms cannot be created or destroyed in chemical reactions. 25 of 25
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