chapter 2 lesson 2 Flashcards
1
Q
a dissolved substance: not always solids
A
solute
2
Q
dissolves other substances to form a solution
A
solvent
3
Q
forms hydrogen ions (H+)
A
acid
4
Q
forms hydroxide ions (OH-) or other ions that can accept H+
A
Base
5
Q
particles are in constant random motion
A
brownian motion
6
Q
matter tends to spread out
A
Brownian motion
7
Q
burning
A
chemical change
8
Q
a substance that changes the rate of a chemical reaction
A
catalyst
9
Q
allow reactions to have a lower activation energy
A
catalysts
10
Q
a special class of catalysts occurring in living things
A
enzymes
11
Q
A
12
Q
make ice less dense than water
A
hydrogen bonds
13
Q
the attraction of water molecules for other substances
A
adhesion
