Science Key words 0.0 / 5 ? SciencePeriodic tableChemical reactionsAtomsGCSEAll boards Created by: katy.sawdonCreated on: 20-05-16 17:50 Atom The smallest partof an element that can exist. 1 of 21 Element A substance that contains only one type of atom. 2 of 21 Molecle A particle which contains two or more atoms convalently bonded together. They may be elements or compounds. 3 of 21 Ion A positively or negativly charged particle. 4 of 21 Mixture A material that contains two or more substances which are NOT chemically combined. 5 of 21 Compound A substance that contains more than one type of atom chemically joined together. 6 of 21 Base A substance which reacts with an acid and neutralises it. 7 of 21 Acid A solution containing hydrogen ions that has a PH lower than 7. 8 of 21 Particles Tiny parts which make up everything. 9 of 21 Proton Positive sub atomic particle with a relative mass of 1. Found in the nucleus. 10 of 21 Chemical reaction A change that makes a new substance. Many such changes are irreversible. 11 of 21 Alkali A base dissolved in water. It forms a solution with a PH greater that 7. 12 of 21 Oxidation A type of chemicall reaction in which electrons are lost. Adding oxygen is one example. 13 of 21 Neutralisation A chemical reaction that takes place when an acid reacts with a base to form a salt and water. 14 of 21 Electron Negative sub atomic particle with negligible mass. Found orbiting the nucleus. 15 of 21 Nuetron A sub atomic particle which has no charge and a realtive mass of 1 and is found in the nucleus. 16 of 21 Reduction A type of chemical reaction in which electrons are gained. 17 of 21 Salt A substance formed when a metal replaces the hydrogen of an acid in a neutralisation reaction. 18 of 21 Isotople One of two or more atoms with the same atomic number but with different numbers of neutrons. 19 of 21 Mass number Total number of protons and neutrons found in the nucleus of an atom. 20 of 21 Atomic number Number of protons and electrons in an atom. 21 of 21
Comments
No comments have yet been made