Vocabulary
Atoms
Elements
Periodic Table
Extra Stuff
100
How was the first Periodic Table arranged?
By atomic mass
100
True or False. Electrons are counted in the atomic mass.
False
100
Draw an atom diagram for the element Sulfur
see teacher example. (it has 6 valence electrons)
100
True or False- The periodic table arranges elements with similar properties into columns.
True
100
How many neutrons are in the element Arsenic (As)?
Atomic Mass - Atomic Number 75-33= 42 neutrons
200
The ___________ of an element tells how many protons it has.
Atomic Number
200
Atoms that have the same number of protons but different numbers of neutrons are called what?
Isotopes
200
Classify these 4 elements as metals or nonmetals: Potassium (K), Radon (Rn), Silver (Ag), Nitrogen (N)
Nonmetals-Radon and Nitrogen Metals-Potassium and Silver
200
What are the properties of a halogen? What group are they found in on the Periodic Table?
very reactive; 7 valence electrons; found in Group 17 Bromine is a liquid, Fluorine and Chlorine are gases, Iodine is a solid
200
How many electrons are in a neutral atom of Calcium (Ca)?
20 electrons, same as the number of protons
300
The smallest unit of an element that still has the properties of the element is an _____________.
Atom
300
What two subatomic particles are found in the nucleus?
protons and neutrons
300
Identify all the elements that are grouped together as Noble Gases.
He, Ne, Ar, Kr, Xe, Rn
300
What are the properties of Noble Gases? What group are they found on the Periodic Table?
very stable, 8 valence electrons (full), non reactive, inert
300
What is the atomic mass of Bromine (Br). Round to the nearest whole number.
80
400
What are the three subatomic particles that make up an atom and their charges?
Proton-positive, Neutron-no charge, Electron-negative
400
What is the formula you use to calculate the number of neutrons in an atom?
atomic mass-atomic number=number of neutrons
400
I am a semi conductor. I am shiny, but brittle. What am I?
Metalloid
400
What are the properties of the Alkali Metals? What group are they found in on the Periodic Table?
highly reactive (most of all groups), 1 valence electrons, will react with water, metal, Group 1
400
How many neutrons does Copper (Cu) have in its nucleus?
64-29=35 neutrons
500
The center of every atom and contains at least one proton.
Nucleus
500
How many electrons can fit in the first 3 electron shells of an atom?
1st ring=2 2nd ring=8 3rd ring=18
500
I am shiny, malleable and conduct electricity well. What am I?
A metal.
500
Identify what group and period you would find the element Silicon (Si).
Silicon is in Group 14, Period 3
500
What do elements share or transfer to form bonds?
Valence Electrons
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