Chapter 2 Keywords Flashcards
1
Q
Atomic number
A
The number of protons. Also known as proton number
2
Q
Isotope
A
Different forms of the same element only in the number of neutrons. They have the same number of protons and electrons
3
Q
Cation
A
Positive ions with fewer electrons than protons
4
Q
Anions
A
Negative ions with more electrons than protons
5
Q
Relative isotopic mass
A
Mass of an isotope relative to 1/12th mass of an atom of carbon 12
6
Q
Relative atomic mass
A
Weighted average mass of an atom relative to 1/12th mass of an atom of carbon 12
7
Q
Binary compound
A
Contains two elements only. 2nd element ends with -ide
8
Q
Polyatomic ion
A
Ion containing atoms if more than one element bonded together
9
Q
Relative molecular mass
A
Used for small molecules
10
Q
Relative formula mass
A
Used for compounds with giant structures
