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Science SFS

midterm flashcards

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