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Charges
Periodic Table
Vocabulary
The 3 Regions
The 3 Regions Divided
100
An atom particle that is positively charged.
Proton
100
How is the periodic table arranged?
by atomic number
100
The number of protons in an atom's nucleus.
atomic number
100
These elements that have properties of both metals and nonmetals.
Metalloids
100
The elements located in group 1 that are very reactive.
The Alkali Metals
200
An atom particle that has no charge.
Neutron
200
What are the elements in a column called?
Group
200
A table showing a repeating pattern of properties of the elements.
The Periodic Table
200
These elements that conduct electricity and heat well, and have a shiny appearance.
Metals
200
The elements in group 17 that are very reactive nonmetals.
The Halogens
300
The atomic particle that is negatively charged.
Electron
300
Each horizontal row in the periodic table is called a _______.
Period
300
An element that has the same number of protons but different number of neutrons in the nucleus.
Isotope
300
A term used to indicate how likely the element is to undergo a chemical change.
reactive
300
The elements in Groups 3-12 that are generally less reactive that most other metals.
The Transition Metals
400
What is the charge of a balanced atom?
Neutral
400
What are the three main regions of the periodic table?
Metals, nonmetals, and metalloids
400
This is formed when an atom loses or gains one or more electrons.
Ion
400
These elements are on the right side of the periodic table and have properties opposite of those metals.
Nonmetals
400
What are the elements in Group 18 that never react with other elements?
The Noble Gases
500
What is the charge of an atom that loses one or more electrons?
Positive
500
Why are elements 58-71 and 90-103 usually set apart from the rest of the periodic table?
To save room.
500
The average mass of the isotopes of atoms of an element.
Atomic Mass
500
What is the process by which atoms produce energy and produce particles?
Radioactivity
500
The elements in the top row of the two rows of metals that are usually shown outside of the main body of the periodic table.
The Rare Earth Elements