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Unformatted text preview: itrogen: N2; water: H2O) Chemical Reactions Atoms are rearranged in different compounds: __________ are transformed into ___________ Reactant products 5 carbon + oxygen C + + O2 carbon dioxide CO2 Law of conservation of mass In a chemical reaction mass is conserved CH4 + O2 CO + HO Law of conservation of mass In a chemical reaction mass is conserved CH4 +
+ O2 CO2 +
+ H 2O C3H8 +
+ O2 CO2 +
+ H 2O 6 Atomic Structure
Modern view of the atom: positively charged ________ surrounded by negatively charged ________ Atomic Structure
Modern view of the atom: positively charged ________ Electron surrounded by negatively charged ________ Nucleus: contains two types of subatomic particles: Protons _________ positively charged (+) Neutron _________ not charged Protons and neutrons make up nearly all of the mass of an atom, but they occupy only a very small percentage of its total volume.
Nucleus Proton 1 Å = 10–10 m
10–10 m = 0.0000000001 m ~0.0001Å 1-5 Å 7...
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