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Duplicate of Biology Intro, Chemistry & Water! Flashcards | StudBud
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Duplicate of Biology Intro, Chemistry & Water!
Duplicate of Biology Intro, Chemistry & Water!
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A Quiz quiz to review basics of Biology, Chemistry and the properties of Water to college students.
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
A solution contains 0.000000001 (10
-9
) moles of hydroxyl ions [OH-] per liter. The solution is:
acidic: H+ donor
acidic: H+ acceptor
neutral
basic: H+ acceptor
2
Which of the following elements is NOT one of the 4 most common elements in living organisms?
oxygen
carbon
phosphorus
nitrogen
3
The reactivity of an atom arises from
the potential energy of the valence shell
the energy difference between the s and p orbitals
the existence of unpaired electrons in the valence shell
the sum of the potential energies of all the electron shells
4
The element aluminum has 13 protons and mass number of 27. Which of the statements are TRUE?
Aluminum has an atomic number of 27 and 14 neutrons
Aluminum has an atomic number of 13 and 14 neutrons
Aluminum has the same number of protons as neutrons
Aluminum is an inert element
5
Ice can float in liquid water because the water molecules in ice are ________________________ .
spread much further apart -- therefore less dense than water
a different molecule than liquid water molecules
held by the surface tension of the water
packed very tightly together and therefore denser than water
6
We can be sure that a mole of table sugar and a mole of vitamin C are equal in their
number of molecules
volume
mass in grams
mass in daltons
7
What coefficients must be placed in the following blanks? C
6
H
12
O
6
→ _____ C
2
H
6
O + _____ CO
2
1; 2
2; 2
3; 1
1; 1
8
____________ of water molecules at the air-water interface gives water high surface tension.
cohesion
evaporation
adhesion
specific heat
9
The abundance of _______________ is the main reason the Earth is habitable.
plant life
water
rocks
nitrogen
10
All the organisms on your campus make up ________________.
a population
an ecosystem
a taxonomic domain
a community
11
Which of the following statements is TRUE about buffers?
They prevent large pH changes.
They accept H+ in aqueous solutions.
Statements a through c are true.
They donate H+ in aqueous solutions.
12
Compared with
31
P, the radioactive isotope
32
P has
one more electron
one more proton
one more neutron
a different atomic number
13
Which of the following is a hydrophobic material?
wax
paper
sugar
table salt
14
The changes in finch beak morphology can best be attributed to this
mechanism
of evolution
natural selection
unnatural selection
random drift
fitness
15
Which of the following is an example of
qualitative
data?
The plant's height is 25 centimeters (cm)
The contents of the stomach are mixed every 20 seconds
The temperature decreased from 20°C to 15°C
The fish swam in a zigzag motion
