Atom - The smallest particle of matter that can exist by itself, Matter - Anything that takes up space and has mass, Element - Substance that consists of only one type of atom, Molecule - Two or more atoms chemically bonded together, Compound - Two or more different types of atoms chemically bonded together, Mixture - Two or more different substances that are not chemically bonded together and can easily be separated, Mass Number - The number of protons + neutrons inside of an atom, Atomic Number - The number of protons inside of an atom, Electrons - Negatively charged particles that orbit around the outside of an atom, Protons - Positively charged particles found inside the nucleus of an atom, Neutrons - Neutral particles found inside the nucleus of an atom, Chemical Change - A change in a substance that is not easily reversed because it makes something completely new by rearranging atoms and ripping apart chemical bonds, Physical Change - A change in a substance that can easily be reversed since nothing new is made and no chemical bonds are broken, Reactants - The substances at the start of a chemical reaction, Products - The substances made at the end of a chemical reaction, Combustion - A type of chemical reaction where a fuel and oxygen react to make carbon dioxide and water, Carbon dioxide gas - Colourless gas that you can detect using lime water, Oxygen gas - Colourless gas you can detect using a glowing splint, Hydrogen gas - Colourless gas you can detect using the pop test, Nucleus - The middle of an atom where almost all of its mass is found,

Chemical Free Chemistry REVISION

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