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science final exam prep
final
39
Science
8th Grade
04/25/2011

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Cards

Term
miscible in water=
Definition
50 drops water, 10 drops liquid being tested, separate layer=not miscible
Term
miscible in ethanol=
Definition
50 drops ethanol, 10 drops liquid being tested, separate layer=not miscible
Term
contains water=
Definition
cobalt chloride pater, no water=blue, water=pink
Term
corrosive=
Definition
use pH paper, not corrosive=3-11
Term
toxic-
Definition
potassium thiocynate, red=toxic
Term
desity relative to water...floats=
Definition
less dense than water
Term
density relative to water..sink=
Definition
more dense than water
Term
glass bottles are made from which 3 materials?
Definition
silica sand, soda ash, limestone
Term
glass bottles are or are not durable/can be recycled?
Definition
are durable and can be recyled
Term
aluminum is made of which 2 materials?
Definition
bauxite and sodium phosphate
Term
platic bottles are made by...and can or cannot be re-made into new bottles:
Definition
melting pellets and can not be made into more bottles after recycled
Term
opaque-
Definition
can not see through at all
Term
scratch in glass=
Definition
harder than glass
Term
no scratch in glass=
Definition
softer than glass
Term
family number 1, 2, 3-11, 13-17, 18
Definition
alkali metals, alkali earth metals, transition metals, other non-metals, noble gasses
Term
niels bohr
Definition
discovered the electron orbits
Term
John Dalton
Definition
atomic theory: all substances are made of atoms that can't be devided, created or destroyed, atoms of same electrons are same and different electrons are different, atoms join together with other atoms to make new substances, a chemical reaction is the re-arrangement of atoms
Term
J.J. Thompson
Definition
discovered electron
Term
democritus is know for the term___which means___
Definition
atomos which means not able to be divided
Term
ernest rutherford
Definition
discovered protons
Term
mendaliev created
Definition
the first periodic table of elements
Term
heisenberg
Definition
electron clouds
Term
ghost map disease:
Definition
cholera
Term
name of man who discovered pumps were contaminated in GM
Definition
John Snow
Term
families one and two ___electrons
Definition
loose
Term
family 17 ___electrons
Definition
gains
Term
the nucleus is made of ____ and ____
Definition
protons and electrons
Term
neutrons have ___charge
Definition
no
Term
the atomic number is the # of ____ in the nucleas
Definition
protons
Term
for a neutral atom (with no charges) the number of protons is the ___ as the number of ___
Definition
same, electrons
Term
the atomic mass is the # of ___ plus # of ___
Definition
protons, nutrons
Term
the atomic mass is the # of ___ plus # of ___
Definition
protons, nutrons
Term
chemical bonding definition-
Definition
atoms that are bound together to form a new substance
Term
valence elecrons are the ___ electrons and are the ___ones on the list
Definition
outermost, last
Term
PTE: left of line is ____, right of line ____, touching line___
Definition
metal, non-metal, metaloids
Term
red-___, green-___, black-____
Definition
gass, liquid, solid
Term
a solution results in ___
Definition
solution
Term
a saturated solution results in ___
Definition
solution
Term
a suspension results in ___
Definition
water
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