Atoms
Subatomic Particles
Periodic Table
Metals, Nonmetals, Metalloids
Periodic Table Trends
100
The center of the atom is called what?
Nucleus
100
Positively charged particle in the nucleus
Proton
100
Number at the top of the element box that tells you the # of protons
Atomic Number
100
The left side of the periodic table are mainly what type of element?
Metals
100
Do atomic numbers get bigger going to the right or left?
Right
200
What is the charge of the nucleus?
Positive
200
Negatively Charged Particle surrounding the nucleus
Electron
200
Number usually at the bottom of the element box and is equal to the # or protons and neutrons
Atomic Mass or Mass Number
200
The right side of the periodic table are mainly what type of element?
Non-Metals
200
Are atomic masses bigger at the top or at the bottom of the periodic table?
Bottom
300
What is the charge of the area outside of the nucleus or the cloud?
Negative
300
Particle with no charge in the nucleus
Neutron
300
This tells you how many valence electrons the element has
Group Number
300
These types of elements separate the right from the left
Metalloids
300
Elements are more reactive as they go to the right or the left?
Left
400
The smallest particle of an element (made of protons, neutrons, and electrons)
Atom
400
Electrons on the outermost energy level
Valence Electrons
400
This tells you how many energy levels or orbitals the element has
Period Number
400
These types of elements are solids, shiny, conduct electricity and heat
Metals
400
There are more valence electrons in elements going to the right or the left?
Right
500
The area surrounding the nucleus where electrons are found
Electron Cloud
500
Mass Number - Atomic Number = What?
# of Neutrons
500
What group on the periodic table is most reactive?
Group 1
500
These elements are usually gases or brittle solids, dull, and don't conduct heat or electricity well.
Non-Metals
500
Which group on the periodic table is not reactive?
Group 18
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