Atomic numbers Flashcards
1
Q
Atomic numbers
A
number of protons in an atom - unique to each type of atom
2
Q
Element
A
a collection of atoms that all have the same number of protons
3
Q
Periodic table
A
a table of chemical elements arranged in order of their atomic number
4
Q
Isotopes
A
one of several forms of an element, each containing the same number of protons but it will have a different number if neutrons
5
Q
Atomic mass
A
the sum of the protons and neutrons in an atom
6
Q
Molecule
A
chemical that results when two or more atoms join together chemically
7
Q
compound
A
a molecule that contains atoms of at least two different elements
8
Q
chemical formulas
A
