Irregular/Quite closely packed, Flows to fit the shape of its container, Vibrates slightly more than a solid, Less dense than solids
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Properties of a Gas
Very irregular, Very far apart, Moves fast, Not dense, Can be compressed
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SOLID into a GAS
Sublimation
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GAS into a SOLID
Deposition
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Definition of Diffusion
particles move from an area of high concentration to an area of low concentration, without any external force. Happens in liquids + gases, Eventually, the particles are spread evenly throughout the ai
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Elements
made up of 1 type of atom
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Compounds
made up of 2 more different types of atoms chemically bound together
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Mixtures
made up of 2 or more different types of atoms NOT chemically bound together
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Protons (Charge, Relative Mass, Location)
+1, 1, Nucleus
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Neutrons (Charge, Relative Mass, Location)
0, 1, Nucleus
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Electrons (Charge, Relative Mass, Location)
-1, 0, Orbiting the nucleus in shells
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Why are atoms neutral?
Because they contain the same number of protons as electrons
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Mass No. - Atomic No. =
Neutrons!
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What is the number at the top of an element box?
Mass Number
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What is the number at the bottom of an element box?
Atomic Number
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What is the group number?
number of electrons in the outer shell
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What is the period number?
number of shells
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ISOTOPES
atoms of the same element with the same number of protons but different number of neutrons. Same atomic no., different mass no. Same chemical properties, Different physical properties
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IONS
an atom or a group of atom with a charge
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NOBLE GASES
do not react, full outer shells, don't lose/gain electrons
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Other cards in this set
Card 2
Front
Irregular/Quite closely packed, Flows to fit the shape of its container, Vibrates slightly more than a solid, Less dense than solids
Back
Properties of a Liquid
Card 3
Front
Very irregular, Very far apart, Moves fast, Not dense, Can be compressed
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