Chapter 2 Flashcards
1
Q
Mass of protons and neutrons
A
1 amu
2
Q
Mass of electron
A
5.5*10^-4
3
Q
What are isotopes?
A
Atoms of the same element with different masses, they have different number of neutrons
4
Q
What are diatomic molecules?
A
Elements that occur naturally as molecules containing two atoms
5
Q
Give the lowest whole number ratio of atoms of each element in a compound
A
Empirical formulas
6
Q
Gives the exact number of atoms of each element in a compound
A
Molecular formulas
7
Q
show the order in which atoms are bonded
A
Structural formulas
8
Q
Show the three-dimensional array of atoms in a compound
A
Perspective drawings
9
Q
When atoms lose or gain electrons
A
Ions
10
Q
Positive ions
A
Cations
11
Q
Negative ions
A
Anions
12
Q
Generally formed between metals and non metals
A
Ionic compounds
13
Q
The study of carbon
A
Organic chemistry
