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Y9 Chemistry

TermDefinition
subatomic particle, positive, mass = 1 amu proton
subatomic particle, negative, mass = 0 amu electron
subatomic particle, neutral, mass = 1 amu neutron
electron shell configuration numbers 2,8,8,18
mass of reactants = mass of products law of conservation of mass
same number of protons, different number of neutrons isotopes
total number of protons and neutrons mass number
number of protons atomic number
radiation with two protons and two neutrons alpha particle
radiation that is an electron with either a positive or negative charge beta particle
radiation that is high energy electromagnetic radiation gamma radiation
time it takes for half a radioactive substance to decay half-life
chemical reaction that releases heat exothermic
chemical reaction that absorbs heat endothermic
substances that release H+ ions acids
substances that release OH- ions bases
acid + base = produces salt + water
acid + metal = produces salt + hydrogen
acid + carbonate = produces salt + water + carbon dioxide
atom with a postive or negative charge ion
Created by: andrewweng0406
 

 



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