Unit 1
What is an Atom
the smallest particle that has the properties of an element
Binary Compounds
are made up of two elements
Synthesis/combination
A + B = AB
What are Isotopes
Atoms of the same element (same number of protons) with different numbers of neutrons.
Chemical bond
Force that holds atoms together in a compound
Decomposition
Ab=A+B
A substance that cannot be broken down into simpler substances.
Ionic Bonds
Occurs between a metal and a non-metal.
Single Replacement
X+Ab=XB+A or Y+AB=AY+B
Are some Isotopes are radioactive (True or False)
True
Covalent bonds
involves the sharing of electrons between atoms, occurs between two or more non-metals.
Double Replacement
XY+AB=XB+AY
What does The Bohr’s Model do
Suggests that electrons orbit the nucleus like the planets around the sun To move to another energy level the electron must gain or lose energy
Oxidation Numbers
A charge that tells the number of electrons an Atom will lose, gain, or share
Chemical Reaction
A change in which one or more substances are converted to different substances