Chapter 2 Flashcards
1
Q
Atom
A
The smallest unit of matter that retains the properties of an element
2
Q
Proton
A
Positive charge
3
Q
Neutron
A
Neutral charge
4
Q
Electron
A
Negative charge
5
Q
Lose an electron
A
Positive charge
6
Q
Gain an electron
A
Negative charge
7
Q
4 main elements human body is made up of
A
Hydrogen, oxygen, carbon, nitrogen (7 Mineral Elements drive processes +13 trace elements)
8
Q
Covalent bond
A
- Atoms share electrons
- stronger and hard to pull apart
- 2 or more nonmetals share electrons
9
Q
Ionic bond
A
- electrons are given away
- weaker and easier to pull apart
10
Q
Cation
A
Positively charged ion (gave up electron) 
11
Q
Anion
A
Negatively charged ion (received electron) 
12
Q
Nonpolar covalent bond
A
- No charge anywhere in molecule
- neutral
- balance negatives and positives
13
Q
Polar covalent bond
A
- unequal sharing of electrons
- One side has partial charge, other side has opposite
14
Q
Hydrogen bond
A
Bond between water molecules
15
Q
Inorganic compounds
A
- do not contain carbon bound to hydrogen
- Carbon dioxide, oxygen, water, electrolytes (salts), acids and bases (hydrochloric acid in stomach) 
