Electron - -1 Negative charge, Neutron - No charge, Proton - +1 Charge, Atomic number - Number of protons, Atom - Fundamental block of chemistry, What is matter made out of? - Matter is composed of different types of atoms., How many elements in the periodic table - 118, What is the periodic table? - A chart that lays out the 118 types of elements that compose matter., First to clearly propose an the idea or an atom - Democritus, Atomos means - Uncuttable , What did Democritus mean by using the term 'atomos'? - There was an ultimate "uncuttable" small portion of substance., When a material is consistent all the way through, this means it is .. - Pure substance, What 2 substances make up water? - Hydrogen and Oxygen, What are elements? - A substance made up of only one type of atom that can't be broken down into simpler forms, Under the right conditions (pressure & temperature) certain elements will react with each other when mixed to form new substances with new properties. these are called? - Compounds, Elements are made up of? - Atoms,

Bell work March 25th

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