Stay positive
Don’t Be So Negative
Free of charge
A-tom of fun
Don’t overreact
100
A particle with a positive charge
A proton
100
A particle with a negative charge
An Electron
100
A particle with no charge
A Neutron
100
A particle smaller than an atom
A subatomic particle
100
A substance produced by a chemical reaction
A product
200
Where protons are located
The Nucleus
200
Where electrons are located
Electron Shells
200
Where neutrons are located
The nucleus
200
A model consisting of a small, dense nucleus surrounded by orbiting electrons
The Bohr Model
200
Five observable indicators that a chemical reaction has occurred
Color change, formation of a precipitate, formation of a gas, odor change, and/or temperature change
300
The part of the periodic table that tells you how many protons an element has
The atomic number
300
The number of electrons that can be found in the first electron shell
2
300
The part of the periodic table that tells you how many neutrons an element has
The atomic mass
300
A vertical column within a periodic table
A group
300
The symbolic representation of a chemical reaction in the form of symbols and formulas, where the reactants are on the left-hand side and the products are on the right-hand side
Chemical equation
400
The number of protons in cobalt
27
400
The name of the last shell in an atom
Outer Shell
400
Another way of saying “no charge”
A neutral charge
400
A horizontal row within a periodic table
A Period
400
A number placed before a compound in a chemical equation, representing how many equivalents of the compound are needed or used
Coefficient
500
The subatomic particle that usually has an equal amount as protons in an element
An Electron
500
The number of electron shells in an Argon atom
Three Electron Shells
500
The number of neutrons in strontium
50
500
Determines the placement of an atom on the periodic table
The atomic number and properties of the element
500
A way of presenting information about the chemical proportions of atoms that make up a particular chemical compound or molecule, using chemical element symbols and numbers
Chemical formula