Chapter 2: Basic Chemistry Flashcards
0
Q
What can do work?
A
ENERGY
1
Q
Define matter
A
Anything that contains mass and occupies space
2
Q
An atom is?
A
The smallest functional unit of matter
3
Q
Proton:
A
p+ Found in nucleus Has mass Gives identity Heavy
4
Q
Neutron:
A
o n Found in nucleus Has mass Gives mass Heavy
5
Q
Electron:
A
- e Found in orbit Practically no mass Gives reactivity Light
6
Q
Neutral Atom=
A
+ -
p = e
7
Q
The Atomic Number =
A
I protons in the nucleus
8
Q
Protons + Neutrons = ?
A
Atomic Mass
9
Q
Atomic mass units
A
An atoms mass relative to the mass of other atoms
10
Q
Dalton:
A
Unit of measurement for usually larger units
Also known as amu
1 Da = 1/2 mass of Ca
11
Q
Mole:
A
1 mole = the same number of atoms of any element
12
Q
Avogodro’s number N
o
A
6.022 x 10 ^ 23
13
Q
Same # of protons, diff # of neutrons =
A
Isotopes
14
Q
Molecule
A
two or more atoms bonded together
