chapter 2 - info. Flashcards
1
Q
protons
A
positive, in nucleus
2
Q
neutrons
A
no charge, in nucleus
3
Q
electrons
A
negative, circling on outside of atom
4
Q
nucleus
A
middle of atom - dense, heaviest part
5
Q
the amount of proton an atom has, differentiates it with one another
A
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6
Q
major elements of life
A
c - carbon
o - oxygen
h - hydrogen
n - nitrogen
7
Q
density
A
ice is less dense than liquid water
8
Q
universal solvent
A
water dissolves many ionic and polar compounds (cant dissolve nonpolar substances, like oil)
9
Q
some compounds break up when they dissolve in water
A
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10
Q
acids
A
- sour
- more hydrogen a substance releases, the more acidic it is
- 0-6, 0 being the most acidic/strongest
11
Q
bases
A
- bitter
- more hydroxide ions a substance releases, the more basic it is
- 8-14, 14 being the strongest
12
Q
neutral
A
- no taste (water)
- 7
13
Q
energy fuels a chemical reaction
A
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