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37 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Mass
& Weight |
is the measure of the quantity of matter in an object.
is a measure of the force of gravity upon an object. |
Quantity
force |
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Accuracy
& Percision |
is how close a measurement is the the actual exact value
has to do with the consistency or reroducibility of a measurment. |
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3 states of matter
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solid, liquid and gas
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With state of matter has the least amount of kinetic energy?
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Solid
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Substance
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is a class of matter that is homeganeous of definite compostion has unique properties. May eather be an element or a compound.
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Element
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is a substance that can not be decomposed tinto similer substances
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Compound
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a substance that can be decomposed by cemical means to a different substance.
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Law of definite composition
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the ratios of the masses of each element in a gavin compound are always the same.
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Atom
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the smallest part of an element that remains the characteristic of the element.
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Molecules
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a group of 2 or more atoms that are linked togeather by cemical compounds bonds
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pure substance
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a class of matter that is homogeneos of definite composion, and has it's own unique properties which make it different from other substances.
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Mixture
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2 or more elements or compounds that are phisically mixed but not cemically combined.
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Hetergeneous
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has multiple phases
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homogeneous
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has one phase
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the 4 signs of cemical change.
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* formations of a gass
* formation of a precipitation * liberation of absorbtion of heat, light or some other form of energy. * a distinct change in color |
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Atomic number
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is the number of protians in the nucieus. All atoms of the same element have the same number of protons hence the same atomic number.
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Mass number
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is the sum of the number of protons and nutrons in the nuclieus.
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Isotoopes
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are atoms of the same element that differ in there mass number.
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ion
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atoms or molecules that have a different number of electrons then protons.
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anion
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an ion has nore electrons then protons the ion has a negative charge. (-)
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cation
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if the ion has fewer electrons then protons there is a posative charge. (+)
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Atomic Mass is measured in what?
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Atomic mass units or (U)
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draw a table
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Element-Z-A-N-ELECTRONS
-Electrical CHARGE |
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z=
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atomic #
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A=
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Mass #
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prefix 1
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mono
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prefix 2
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di
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prefix 3
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tri
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prefix 4
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tetra
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prefix 5
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penta
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prefix 6
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hexa
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prefix 7
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hepta
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prefix 8
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octa
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prefix 9
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nova
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prefix 10
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deca
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a=
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z+n
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n=
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a-z
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