Chemistry Flashcards
How do you find the number of neutrons?
Mass number-atomic number
How many electrons can the first she’ll fit?
2e-
Shell 2 can hold a max of…
8e-
Shell three can hold a max of…
8e-
Shell four can hold a max of….
2e-
How many natural elements are there?
92
The columns going down in the periodic table
Groups
The groups going across the periodic table
Period
What is an electric charge on an atom called?
Negative (e-)
Two or more elements or compounds not chemically joined?
Mixture
The smallest whole particle of an element
Atom
An atomic particle with no charge
Neutron
These partials spin around the nucleus of an atom?
Electron
The number of protons in the atom nucleus give you
The atomic number
When neutrons are combined with protons you get the
Atomic mass
Electrons are arranged in layers known as…
Shells
Two or more elements chemically joined
Compound
The charge on a proton
Positive
An atom is not made of matter, rather it’s made of
Energy
What are cations?
Positively charged ions
What are anions?
Atoms that have gained electrons. Since they now have more electrons than protons, anions have a negative charge.
What is an ion?
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Ionic bonds form when..
A metal and a non metal combine and form a crystal
