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Atoms
Elements
Metals / Nonmetals / Metalloids
Groups
Bohr Diagrams and Lewis Structures
100
The uncharged particle in the nucleus of an atom.
What is a neutron?
100
The total number of elements known.
What is 115?
100
Shiny and a very good conductor.
What is a metal?
100
This group has 8 valence electrons, and is very inactive.
What is Noble Gases?
100
Draw the Bohr diagram of Boron.
What is 2, 3?
200
Invisible negatively charged particle.
What is an electron?
200
The total number of naturally occurring elements.
What is 90?
200
Brittle and a poor conductor.
What is a nonmetal?
200
This group has 1 valence electron, is very active, and never found alone in nature.
What is Alkali Metals?
200
Draw the Bohr diagram of Neon.
What is 2, 8?
300
Positively charged particle in the nucleus of an atom.
What is a proton?
300
The number of protons in an atom.
What is the Atomic Number?
300
An OK conductor of electricity.
What is a metalloid?
300
This natural element in the Halogen group is radioactive.
What is Astatine?
300
Draw the Bohr Diagram of Chlorine?
What is 2, 8, 7?
400
Positively charged central part of an atom; protons and neutrons reside here
What is the nucleus?
400
The number of protons plus the number of neutrons in an atom.
What is the Atomic Mass / Mass Number?
400
Used in electric wires, drinking cans, and building construction.
What is a metal?
400
This element in the Oxygen group has 16 neutrons.
What is Sulfur?
400
Draw the Lewis structure of Beryllium?
What is 2?
500
An atom of an element with a different number of neutrons.
What is an isotope?
500
Elements are organized on the periodic table according to this.
What is the number of protons?
500
Most of the periodic table is made of these.
What are metals?
500
This Alkali Metal has an atomic mass of 39.
What is Potassium?
500
Draw the Lewis structure of Nitrogen.
What is 5.