Periodic Table
Atoms
Matterville
Terms
Periodic Table
100
Atoms in a column
What is a group?
100
An uncharged particle
What is a neutron?
100
Allowed in the Nucleus Arcade
What are protons and neutrons?
100
The amount of time ot takes for one-half of an atom to decay
What is a half-life?
100
Atomic number for Helium?
What is 2?
200
Elements in a horizontal row in the periodic table
What is a period?
200
Positively charged particle
What is a proton?
200
Center of Matterville
What is a nucleus?
200
Number of protons in the nucleus
What is the atomic number?
200
Atomic mass for Selenium
What is 78.96?
300
First organized the periodic table
Who is Mendelev?
300
Negatively charged particle
What is an electron?
300
Hangs out outside of the Nuceus Aracde
What are electrons?
300
The average mass of all elements isotopes
What is the atomic mass number?
300
Number of protons in the nucleus of Boron
What is 5?
400
Properties that are opposite of metals
What are nonmetals?
400
Discovered that atoms were the smallest units of matter
Who is Dalton?
400
Number of electrons on Energy Street
What is 2?
400
A nucleus has too few or too many neutron it is this
What is radioactive?
400
Symbol for Oxygen
What is O?
500
Elements that have properties of both metals and nonmetals
What are metalloids?
500
Number of electrons on the Energy Freeway?
What is 8?
500
Number of electrons in the energy superhighway
What is 16?
500
Atomic number for Lithium
What is 3?
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