Lecture 2 flashcards
1
Q
protons
A
+
2
Q
electrons
A
-
3
Q
neutrons
A
neutral
4
Q
Ion
A
charged
5
Q
Cation
A
positive charge
6
Q
Anion
A
negative charge
7
Q
physical reaction
A
same thing, just looks different (tearing paper)
8
Q
Chemical reaction
A
completely changed (burning wood)
9
Q
covalent bonds
A
strong bonds that share electrons
10
Q
Ionic Bonds
A
weak bonds held by a charge
11
Q
molecules
A
two or more atoms
12
Q
compounds
A
two or more different atoms
13
Q
ATP
A
energy from food and oxygen
14
Q
Catalyst
A
speed up reactions
15
Q
enzymes
A
protein catalysts
16
Q
solution
A
solvent+solute
17
Q
solvent
A
water
18
Q
solute
A
sugar,salt etc
19
Q
precipitates
A
solids where it should be liquid
20
Q
pH scale
A
0-14
21
Q
neutral pH
A
7
22
Q
most acidic pH
A
0
23
Q
most alkaline pH
A
14
24
Q
normal blood pH
A
7.35-7.45
25
Q
if the pH number goes down?
A
H goes up, more acidic
26
Q
if the pH number goes up?
A
H goes down, alkaline
