Atoms
Periodic Table
Elements
Miscellaneous
100
The smallest unit of an element that maintains the properties of that element
What is an atom?
100
Halogens are found in this group on the periodic table
What is group 17
100
This element has 1 electron in its outer shell which makes it reactive, but it is a gas at room temperature.
What is Hydrogen?
100
These metals are liquid at just around room temperature
What are gallium and mercury?
200
The positively charged subatomic particle
What is a proton?
200
These are found to the right of the zigzag line on the periodic table.
What are nonmentals?
200
These are the horizontal rows on the periodic table.
What are periods?
200
This man developed the first periodic table and left gaps for future elements
Who is Dmitri Mendeleev?
300
The negatively charged subatomic particle?
What is an electron?
300
These are the most reactive elements on the periodic table
What are alkali metals?
300
These are the vertical columns on the periodic table.
What are groups?
300
The number of valence electrons an atom "wants" in its outer shell
What is 8?
400
An atom's central region where protons and neutrons are found
What is the nucleus?
400
These are unreactive nonmetals that are colorless, odorless gas at room temperature. Hint: one of this family/group makes blimps float.
What are the noble gases?
400
This the weighted average of every known isotope of an element
What is atomic mass?
400
A atom is considered neutral if it has equal numbers of these
What are protons and electrons?
500
An atom that has more electrons than protons
What is an negatively charged isotope?
500
These groups make up most of the periodic table (3-12 in your book)
What are transition metals?
500
The force that keeps the nucleus of an atom together
What is strong force?
500
When atoms combine together to form a new substance
What is chemical bonding?
M
e
n
u