Into to Atoms
Organizing Elements
Metals
Nonmetals
Misc.
100
This is a representation of an idea that help scientists understand what they cannot observe directly.
What is a model?
100
This is given specific to each element and consists on one or two letters.
What is chemical symbol?
100
This is the number of valence electrons that alkali metals have.
What is one?
100
This is the side of the periodic table that metals are located on.
What is the right?
100
Horizontal rows are called this on the periodic table.
What are periods?
200
This is what Rutherford contributed to the atomic model.
What is the atom's positive charge must be packed within a small region in its center called the nucleus?
200
A column of elements on the periodic table are called this.
What is group or family?
200
These are some properties of metals.
What is malleable, ductile, the ability to conduct electricity, ect.?
200
This is what group the halogen family is in.
What is 17?
200
These two subatomic particles make up the atomic mass.
What is protons and neutrons?
300
This is the scientist who said that electron orbits resemble planets orbiting the sun.
Who is Bohr?
300
You can predict this from an elements location on the periodic table.
What are its properties?
300
The elements Barium and Calcium are these types of metals. (This family)
What is alkaline earth metals?
300
This is the family that does not form compounds.
What is noble gases?
300
This element has 16 protons.
What is oxygen?
400
The identity of an atom is determined by this.
What is the number of protons?
400
These are what electrons in the outer shell of an element are called.
What are valence electrons?
400
This is the most reactive family of metals.
What is alkali?
400
This is a property of metalloids.
What is being a semiconductor?
400
This is the spontaneous emission of radiation by an unstable atomic nucleus.
What is radioactive decay?
500
This subatomic particle determines the reactivity of an element.
What is electrons?
500
The original periodic table was arranged according to this.
What is increasing atomic mass?
500
This is the charge that metal ions have when they form bonds.
What is positive?
500
This is the type of charge nonmetal ions have when they form bonds.
What is negative?
500
This is what an isotope is.
What is atoms with the same number of protons, but a different number of neutrons?
M
e
n
u