midterm flashcards
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| C3H8 | propane
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| anything that takes up space and has mass | matter
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| a very small particle that makes up most kinds of matter and consists of smaller parts called protons, neutrons, and electrons | atom
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| (-)negatively charged particles | electron
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| (+) positively charged particles | proton
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| central part of an atom | nucleus
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| the nucleus of atom "neutral" | neutron
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| mass volume | density
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| states that matter is not created or destroyed but only changes its form | law of conservation of mater
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| where is most of the mass of an atom located | nucleus
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| what did Thomson say about the electron inside the atom? | negatively charged particles in an atom
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| Who said that electrons move energy levels? | Niels Bohr
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| What did Chadwick say about neutrons? | particles that come from the nucleus and have no charge (neutral)
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| Cu=1 ---- 1 N = 1 x 2 = 2 O = 3 x 2 = 6 9 atoms | Cu(NO3)2
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| H=3 P=1 O=4 8 atoms | H3PO4
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| look at your pictures on your cards | Bohr Model
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| Mg=1 ----- 1 C = 2 X 3 = 6 H = 3 X 3 = 9 O = 2 x 3 = 6 22 atoms | Mg (C2H3O2)3
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| practice on worksheets | balance equations
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| tells which elements make up a compound as well as how many atoms of each element are present | chemical formula
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| 2 or more substances mixed together which don't make up a new substance | mixture
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| mixture that is the same throughout | homogeneous mixture
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| a metal made of 2 or more solids | alloy
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| mixture that is not mixed well | heterogeneous mixture
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| the part of the solution that does the dissolving | solvent
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| the part of the solution that is dissolved | solute
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| substance whose smallest unit is made of atoms of more than one element | compound
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| matter that has same composition and properties throughout | substance
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| who was the first person to coin the term atom | Democritus
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| Where did Rutherford say that protons existed | in the nucleus of an atom
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| law of conservation of matter | What was Lavisier's Law called
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| carbon monoxide | CO
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| carbon dioxide | CO
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| hydrogen peroxide | H2O2
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| water | H2O
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| What is the universal solvent? | water
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Created by:
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