Introduction to Atoms
Organizing the Elements
Metals
Nonmetals & Metalloids
Vocabulary
100
An element's identity can be determined by this.
What is Atomic Number?
100
Mendeleev arranged his periodic table in order of increasing ___________
What is atomic mass?
100
A material that can easily be drawn into the shape of a wire is this.
What is ductile?
100
The only nonmetal in group 14.
What is Carbon?
100
Can be hammered or rolled into flat sheets.
What is malleable?
200
The sum of protons and neutrons in an atom.
What is the mass number?
200
Another name for family.
What is a group?
200
The metals of group 1.
What are alkali metals?
200
Found on the right side of the periodic table, dull & brittle, many are gas at room temperature.
What are properties of nonmetals?
200
The most reactive metals.
What alkali metals?
300
Atoms with the same number of protons but different number of neutrons.
What are isotopes?
300
From the element's location in the periodic table you can predict this.
What are its properties?
300
Elements with an atomic number above 95.
What are transuranium elements?
300
The highly reactive nonmetals of group 17.
What are halogens?
300
Atomic model that looks like planets orbiting the sun.
What is the Bohr's model?
400
The smallest part of the atom.
What is an electon?
400
The most reactive metals are found here.
What is in Group 1, the first column on the left?
400
The direction that reactivity decreases on the periodic table.
What is right to left?
400
Two of the same atoms bonded together.
What is a diatomic molecule?
400
Elements that don't ordinarly gain, lose or share electrons. Found in group 18.
What are noble gases?
500
Atomic model that is compared to seeds in a watermelon.
What is the Thomson Model?
500
The group that contains the most elements?
What are the metals?
500
Calcium is in this family.
What are alkaline earth metals?
500
The group 15 element used to make compounds known as fertilizers.
What is Nitrogen?
500
Substances that can that can conduct electric current under some conditions but not under other conditions.
What are semiconductors?
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