C4 KeyWords 0.0 / 5 ? ChemistryAtoms and compoundsGCSEOCR Created by: HarleyTillotsonCreated on: 26-05-16 14:32 28396411057 Across 1. Arrangement of the electrons in an atom in shells around the nucleus. (10, 9) 5. Horizontal row in the periodic table. The atomic number of each element increases by one, reading them left to right. (6) 6. Vertical column in the periodic table. Elements in a group have similar chemical properties. (5) 8. Atom, or group of atoms, that has gained or lost one or more electrons and so is electrically charged. (3) 9. Particles from which atoms are made, including protons, neutrons, and electrons. (9) Down 2. Process by which smaller particles of solid are removed from a liquid by passing the liquid through a filter. (10) 3. Subatomic particle found in the nucleus of an atom. It has no charge and a relative mass of 1. (7) 4. Substance made up of two or more different elements, chemically combined. (8) 7. Substance that consists only of atoms with the same atomic number. (7) 10. Subatomic particle found outside the nucleus of an atom. It has a charge of -1 and a very small mass compared to protons and neutrons. (8)
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