Periodic Table
Percent Composition
Base Units/Temperature
Atoms and its Contents
Naming Compounds
100
_____ created the first periodic table.
Demetri Mendeleev
100
Define Percent Composition.
The percentage by mass of each element in a compound
100
The abbreviation for centimeters is _____.
cm
100
Define Atom
Basic unit in chemistry
Building blocks of life
100
Two types of Compound
Covalent & Ionic
200
Groups on the periodic table go ______.
Up and Down
or
Vertical
200
The equation is ___________.
Total mass of the element/Total mass of compound x 100
200
The metric system is used in every country except ______.
The United States
200
The number of protons have to = the number of ____
Electrons
200
Name this compound
KBr
Potassium Bromide
300
Periods on the periodic table go _______.
Left to right
or
Horizontal
300
Percent Composition of H2O
H=11.1%
O=88.9%
300
A mole is the measurement of _______.
The amount of a substance
300
To find neutron you subtract the atomic mass by the _____.
Atomic number
or
Number of Protons/Electrons
300
Name this Compound
AgCl3
Aluminum Chloride
400
The difference between cations and anions are _____.
Cations = Positive charge
Anions = Negative charge
400
Percent Composition of Fe2Ge4
Fe=27.78%
Ge=72.22%
400
Name the three temperatures used in Chemistry.
Celsius
Fahrenheit
Kelvin
400
An isotope is _______.
Extra neutrons on an atom
400
Give the formula for
Sulfur Trioxide
SO3
500
Where are the ionic charges on the periodic table?
500
Percent Composition of In4H6Al4
In=80.12%
H=1.05%
Al=18.83%
500
The equation for Kelvin is _____.
Celsius + 273 = Kelvin
500
Protons, Neutrons & Electrons are all _______.
Subatomic particles
500
Give the formula for
Dihydrogen Pentoxide
H2O5