C1 1.1 to C1 1.5 0.0 / 5 ? ChemistryAtoms and compoundsGCSEAQA Created by: ja7sa096Created on: 19-04-16 19:49 What are all substances made up of? Atoms 1 of 28 What is an element? A substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance 2 of 28 On which side of the periodic table are the metals? Left 3 of 28 What do the columns in the periodic table represent? The groups of elements 4 of 28 What is a compound? A substance made when two or more elements are chemically bonded together 5 of 28 What does an atom contain? Nucleus and electrons 6 of 28 What is the nucleus made of? Protons and neutrons 7 of 28 Any atom has the same number of ....... as ........ Protons, electrons 8 of 28 What is the overall charge of an atom and why? 0 because the protons and electrons cancel each other out 9 of 28 What are the relative charges of a proton, neutron and electron? +1, 0, -1 10 of 28 What does the atomic number tell us? The number of protons (and therefore electrons) 11 of 28 What does the mass number tell us? The number of neutrons + protons 12 of 28 How do we calculate the number of neutrons? Mass number- atomic number 13 of 28 Is the atomic number on the top or the bottom? Bottom 14 of 28 What are the elements arranged in the periodic table by? Their atomic number 15 of 28 What are the electrons in an atom arranged in? Energy levels/ shells 16 of 28 What do the atoms in the same groups of the periodic table have in common? They have the same number of electrons in their outermost shells 17 of 28 What does the number of electrons in an atom's outermost shell determine? They way the element reacts 18 of 28 Why are the atoms of Group 0 elements so unreactive? The atoms all have very stable arrangements of electrons (full outer shells) 19 of 28 How do atoms react together? Non metals and metals transfer electrons, non-metals share elctrons 20 of 28 What are ions? A charged particle produced by the loss or gain of electrons 21 of 28 What type of ions do metal atoms form? Positively charged 22 of 28 What type of ions do non-metals form? Negatively charged 23 of 28 What are ionic bonds? Strong forces of attraction between the positive and negative ions in a compound that form chemical bonds 24 of 28 What charge does a metal/non-metal compound have? 0, charges on the ions cancel each other out 25 of 28 What is covalent bonding? When two or more non-metals bond by sharing electrons 26 of 28 What does the chemical formula of an ionic compound tell us? The ratio of each type of ion in the compound (e.g. Mg 2+) 27 of 28 how does the mass of reactants compare with the mass of products in a chemical reactions? As no new atoms are ever created or destroyed in a chemical reaction: the total mass of reactants= the total mass of products 28 of 28
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