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Chemistry of Life Flashcards | StudBud
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Chemistry of Life
Chemistry of Life
39 terms
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StudBud Administration
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A review of biochemistry and the scientific method
Flashcards
39 cards
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Practice quiz
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Host live
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Questions
39
Answers
1
What is being pictured?
Solution
Base
Acid
Suspension
2
The Greek word that means
uncuttable -
the origin of the word for the smallest non-living thing
Kudos
atom
bread
Redi
3
This is the variable a scientist alters in an experiment:
varying variable
responding variable
manipulated variable
dependent variable
4
Which of the following loves water?
polar substances
nonpolar substances
hydrophobic substances
oil
5
If you have too much OH- in your body, what will help restore your ph level to neutral?
tums
stomach acid
bases
buffers
6
Movement is one of the 8 characteristics of life:
False
True
7
When salt is dissolved in water, the salt is the______.
solvent
solution
suspensions
solute
8
The nucleus of an atom is made up of:
electrons and protons
neutrons and electrons
neutrons and protons
octet
9
A substance composed of 2 or more compounds that are physically -but not chemically- combined.
solute
mixture
combo
homogeneous substance
10
The type of bond that holds two molecules of water together:
van der waals force
hydrogen bond
covalent bond
ionic bond
11
What type of mixture is pictured?
solution
solvent
solute
suspension
12
Which part of a solution dissolves substances?
solute
salt
suspension
solvent
13
with a water molecule, the oxygen side is slightly______ and the hydrogen side slightly _____.
negative, positive
positive, negative
neutral, negative
negative, negative
14
How many electrons does this atom have?
125
protons
207
82
15
A mixture with an equal amount of H+ ions & OH- ions is called:
neutral
a base
a buffer
an acid
16
Data gathered from observing a tree that grows 2 feet over 1 year:
controlled
experimental
quantitative
qualitative
17
Ice floats on water because:
water shrinks when it freezes.
of cohesion.
water expands when it freezes.
ice has a higher density than water.
18
Atoms that share electrons are called_____________ bonds. (These are the strongest bonds)
van der waal
covalent
hydrogen
ionic
19
What property of water makes belly flops hurt?
bonds
surface tension
cohesion
adhesion
20
Which is the weakest acid shown?
pH 8
pH 6
pH 7
pH 2
21
This term applies to a molecule of water sticking to another molecule of water.
covalent bonding
adhesion
cohesion
lesion
22
Which bonds are the strongest?
ionic
van der waal forces
covalent
hydrogen bond
23
A bond formed due to the stealing or transferring of electrons is called a:
Covalent Bond
Ionic Bond
Hydrogen Bond
Van Der Waal Force
24
Water can be described as:
atom
bonded
non-polar
polar
25
In a mixture of oil and water, the oil is called:
a solution
a dissolver
a solvent
a suspension
26
What is the name of the hypothesis that said "life could arise from non-living matter"
spontaneous synthesis
neo-creation
spontaneous generation
Redi-wronga
27
this property describes why water clings to other substances:
covalence
adhesion
cohesion
electron transference
28
How many neutrons does this atom have?
82
207
208
125
29
A single water molecule is held together with:
ionic bonds
covalent bonds
magnets
hydrogen bonds
30
A controlled experiment allows the scientist to isolate and test:
a conclusion
several variables
a single variable
a mass of information
31
How many electrons do atoms "want" in their outer orbital shell?
8
6
16
12
32
This term explains why water climbs up the roots and xylem of plants:
capillary action
surface tension
cohesion
adhesion
33
A water-based syrup is poured on the shoe. The shoe is repelling the syrup because it is:
polar
hydrophobic
hydrophilic
both hydrophilic and polar
34
Who would win in a fight?
lion
warthog
surface tension
pig
35
What interact during a chemical reaction?
protons
valence electrons
inner electrons
neutrons
36
The property of water responsible for maintaining homeostasis:
its ability to bond chemically
capillary action
its high specific heat
its polarity
37
What is responsible for this baby's reaction to tasting lemon?
An excess of OH- on the baby's tongue
Acid reflux
An excess of H+ on the baby's tongue
A taser
38
A base has more ______ than _______
H+ ; OH-
hydrogen ions ; hydroxide ions
hydroxide ions ; hydrogen ions
OH- ; H+
39
the name of a charged atom:
molecule
ion
radioisotope
element
