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Review Matter Chapter 8
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What is a chemical formula?
symbols and numbers that tell what elements are in a compound
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Which item is matter?
light, sound. gravity, sand
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mixture
two or more substances that are not a compound
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Which particle is the lightest found in an atom?
electron, proton, neutron, nucleus
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particle with a negative electric charge
electron
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What is a particle accelerator?
a machine that makes synthetic elements
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What is a compound?
matter made when two or more elements combine to make a new substance
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proton has a ____charge
positive
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what does the periodic table do?
organizes elements according to the number of protons
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Elements are made up of ___ type of matter
1
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anything that takes up space and has mass
matter
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small particle that makes up much matter
atom
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particle in the nucleus with no electrical charge
neutron
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What is a heterogeneous mixture?
two or more substances that are combined but not dissolved; can be separated into its original parts
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The chemical formula for carbon dioxide is CO2 How many molecules of oxygen are in 4 molecules of carbon dioxide?
8
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atom-beryllium; atomic number, atomic mass, protons, neutrons, electrons
atomic number 4; atomic mass 9; protons 4; neutrons 5; electrons 4
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