Vocabulary
Periodic Regions
Periodic Elements
Atoms
Toss-Up
100
each horizontal row in the periodic table
What is a period
100
alkali metals are
What is reactive metals
100
H
What is hydrogen
100
electron cloud
What is the cloud around the nucleus called
100
radioactive elements
What is something that can treat cancer
200
isotopes
What is atoms of the same element that have a different number of neutrons
200
transition metals
What is gold, silver, and iron
200
oxygen
What is O
200
nucleus
What is combination of protons and neutrons
200
Dmitri Mendeleev
Who is the inventor of the periodic table
300
amount of time it takes for 1/2 of the atoms in a particular sample to decay
What is half-life
300
chlorine
What is a halogen
300
I
What is iodine
300
atomic number tells you
What is the amount of protons in the nucleus
300
positive electrons
lose an electron AND get smaller
400
ion
What is an atom or group of atoms that has a positive or negative charge
400
neon, glowing signs
What is noble gases
400
chlorine
What is Cl
400
atomic size left to right
What is increases
400
gold has 79 protons and...
79 electrons
500
periodic table
What is a table of the elements arranged by atomic number, that shows the patterns in their properties
500
lanthanum
What is rare earth metals
500
N
What is nitrogen
500
trend for densities on the periodic table
What is out to inside
500
most common elements in the earth's crust
What is oxygen, silicon, aluminum
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