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Biology Chapter 2 Flashcards | StudBud
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Biology Chapter 2
The pH scale measures what?
Exothermic reactions
Biology Chapter 2
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1
Exothermic reactions
neither absorb or release energy
absorb more energy than release
what make Exxon gasoline
release more energy than absorb
2
The pH scale measures what?
how much water is in the pool
what's in my stomach
the concentration of H ions
the concentration of HP molecules
3
An atom is the
the nucleus
smallest unit of matter on Earth
biggest unit of matter on Earth
a complex compound
4
Products are substances
found in grocery store
not involved in chemical reactions
used in multiplication tables
made by a chemical reaction
5
Covalent bonds are different from ionic bonds
they have magnets in them
because they are bigger
have a PH level of 0
because they are sharing a pair of electrons
6
A compound is a substance made of atoms that
have exactly the same parts
is bonded together in a ratio
a place to hideout
separated at birth
7
An example of carbohydrate is
cereal - bread - cakes
apples - kiwi - celery
water
meats - turkey - milk
8
The pH scale goes from
0-10
0-50
0-14
0 to 100 real quick
9
A chemical reaction
changes substances by breaking and forming chemical bonds
when you get sweaty
almost never occurs on Earth
occurs but nothing changes
10
Endothermic reactions
All of the above
Release more energy than absorb
End the sun and warmth
Absorb more energy than release
11
Reactants are substances
changed during a chemical reaction
found in space
found underground
substances made by chemical reaction
12
An example of a protein we eat
Bread - Cereal
Chicken - Beef - Eggs
Apple - Orange - Broccili
Mild duds - Sour Patch - Skittles
13
Mr. Shaun lights a piece of paper on fire . What is the product in this chemical reaction?
Match
Ash
Lined paper
All of the above
14
On the pH scale, the number 7 is
very high
very low
neutral
winning
15
If I had heartburn, which is acid indigestion, TUMS would be on which side of the scale....
8-14 Base
Not on the scale
0-6 Acid
7 Neutral
16
A protein is
made up of carbohydrates
polymers bonding together
a polymer made up of monomers
my muscles
