Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Atom |
smallest unit into which an element can be divided and still be that element |
|
|
Proton |
positive charge and is found in the nucleus of an atom |
|
|
Neutron |
No charge and is found in the nucleus of an atom |
|
|
Electron |
Negative Charge |
|
|
Radioactive |
an atom with a nucleus that will change over time |
|
|
Mass Number |
the sum of the number of protons and neutrons in an atom |
|
|
Nucleus |
the center of an atom made of protons and nuetrons |
|
|
Atomic Mass Unit |
unit of mass that describes the mass of an atom or molecule |
|
|
Atomic Number |
the amount of protons that are in the nucleus of an atom |
|
|
Atomic Mass |
total number of particles in an atoms nucleus |
|
|
Ion |
atom that has the same number of protons and electrons |
|
|
Energy Shells |
region around the nucleus where an electron is likely to be found |
