37 Cards in this Set
| Front | Back |
|---|---|
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In ________ and ___________ you round to the lowest number of decimal places.
|
addition
subtraction
|
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In ______________ or ________ you round to the least amount of numbers in a problem
|
multiplication
division
|
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___________ analysis is a technique used to convert one physical quantity to another
|
dimensional
|
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Density = ____ divided by ______
|
mass
volume
|
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Mass = ______ times _______
|
volume
density
|
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Law of ________ composition states that composition of a pure substance never ______
|
constant
varies
|
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Law of multiple ___________ states that when two or more different compounds of the two elements are compared, the masses of one.......and in the ration of small whole numbers
|
proportions
|
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Law of ____________ of Mass says the total mass is the same at the end as in the beginning
|
Conservation
|
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The atomic theory of matter states that matter is neither _______nor _________
|
created
destroyed
|
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Protons have a __ charge
|
1+
|
|
Neutrons have a _______ charge
|
neutral
|
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Electrons have a __ charge
|
1-
|
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All atoms of the same element have the same number of _______.
|
Protons
|
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The bottom left hand number beside the element symbol is the number of _______, and it is the ______ number
|
protons
atomic
|
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Mass number is _______ plus ________
|
protons
neutrons
|
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________ are atoms that have the same number of protons but a different number of neutrons
|
isotopes
|
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______ ____ ____ or (___) is one-twelfth the mass of a carbon-12 atom
|
atomic mass unit
AMU
|
|
Molecular/Empirical
Ex: H202
|
Molecular
|
|
Molecular/Empirical
HO
|
Empirical
|
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____ are formed when an atom loses or gains electrons
|
Ions
|
|
A cation is a ________ charge
|
positive
|
|
a anion is a ________ charge
|
negative
|
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protons and neutrons are in the _______ of an atom
|
nucleus
|
|
65
Cu
29
65 is the ____ ______.
29 is the number of _______.
|
mass number
protons
|
|
On the periodic table...the number above the symbol is the ______ number (# of _______), and the number below is the ____ number.
|
atomic
protons
mass
|
|
N^3- means that there are 3 ____ protons than electrons
|
less
|
|
Si is _______
N is ________
Cr is ________
Ar is _____
Sr is _________
|
Silicon
Nitrogen
Chromium
Argon
Strontium
|
|
Group _ is alkali metals
|
1
|
|
Group _ is alkaline earth metals
|
2
|
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Group __ is halogens
|
17
|
|
group __ is rare gases
|
18
|
|
The groups go _ through __, and the periods go _ through _
|
1
18
1
7
|
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Groups _ through __ are called transition elements
|
3
12
|
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The ______ are below and to the left of the zig zag line
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metals
|
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the ___-______ are above and to the right of the zig-zag line
|
non-metals
|
|
non-metals
|
white
|
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Carbon atoms are _____
|
black
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CHEM 120: Lab Final