stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
BJU Biology CH.2 Review Flashcards | StudBud
Explore
/
BJU Biology CH.2 Review
BJU Biology CH.2 Review
38 terms
·
StudBud Administration
·
144 plays
BJU Biology Chapter 2
Flashcards
38 cards
F
Practice quiz
P
Host live
L
Questions
38
Answers
1
in a solution, the substance that does the dissolving is called the ____________.
precipate
none of these
solvent
solute
2
ice on a pond melting
physical property
chemical property
chemical change
physical change
3
the speed at which particles move is associated with __________.
temperature
air pressure
chemical changes
color
4
Atoms are made of smaller particles including negatively charged __________.
electrons
ions
neutrons
protons
5
Crumpling a piece of paper
chemical change
physical change
6
A(n) __________ is the smallest individual part of an element.
molecule
particle
compound
atom
7
Covalent compounds form chemical bonds by sharing __________.
ions
electrons
valences
protons
8
An atom is classified by the number of _________ in its nucleus.
electrons
ions
protons
neutrons
9
a(n) _____________ is a pure substance made of only one kind of atom.
element
ion
compound
substrate
10
___________ is the tendency of energy to spread out.
diffusion
thermal energy
entropy
Brownian motion
11
which of the following is not a molecule?
Water H2O
DNA
Magnesium Mg
Nitrogen N2
12
Covalent compounds form when atoms ________ electrons.
exchange
gain
lose
share
13
The main purpose of carbohydrates for living things is for _____________.
storage
body coverings
information
fuel
14
Proteins are organic polymers consisting of chains of ____________.
simple sugars
amino acids
nucleotides
R groups
15
Which of the following is not a smaller part of an atom?
Ion
Electron
nucleus
proton
16
An ion is ___________.
an atom with more electrons than protons
neither a nor b
Either a or b
an atom with more protons than electrons
17
Which of the following is true about enzymes?
they lower the activation energy of a reaction.
they are catalysts
they are large molecules
all of these
18
seawater is a solution of water, minerals, and gases. In a seawater solution the solute is ___.
minerals and gases
none of these
water and minerals
water and gases
19
Lipids include _________.
sugars
fats
nucleotides
amino acids
20
The organic compounds all contain the element ________.
hydrogen
oxygen
carbon
nitrogen
21
Atoms are __________.
the smallest particles known to man
the building blocks of matter
the first man created on earth
two molecules bonded covalently
22
Running a tree branch through a wood chipper.
Chemical change
chemical property
physical property
Physical change
23
a carton of milk turning sour
chemical property
chemical change
physical change
physical property
24
A pure substance made of only one kind of atom is ________________.
a(n) element
ion
chemical
neutron
25
A catalyst helps slow down a reaction.
True
False
26
what are the four main kinds of organic molecules found in living things?
oxygen, water, carbon, and nitrogen
lipids, carbohydrates, proteins, and nucleotides
carbons, phosphates, nitrates, and aminos
lipids, oils, sucrose, and glucose
27
temperature is a measurement of __________.
the speed of moving particles.
the amount of energy stored in chemicals.
how much energy an object has
the amount of matter in an object
28
bonds between atoms _________.
store chemical energy
usually form compounds
create nuclear changes
are always ionic
29
a(n) ___________ is a pure substance made of two or more chemically combined elements.
molecule
element
chemical bond
compound
30
_____________ is the motion caused by the collision between particles.
condensation
Diffusion
Brownian Motion
Evaporation
31
An exothermic reaction absorbs energy.
False
True
32
A key element for living things and one that can form up to four chemical bonds is __________.
water
carbon
hydrogen
oxygen
33
Water striders can run across the surface of water because of which property of water?
Surface tension
Cohesion
Density
Adhesion
34
A substance that decreases the activity of an enzyme is a(n) __________.
inhibitor
substrate
reducer
catalyst
35
The physical stuff that makes up everything in the universe is known as ___________.
Elements
matter
energy
mass
36
What is cohesion?
When water molecules separate
When water molecules stick to other substances
Cohesion has no been proven to be a scientific law yet
When water molecules stick to each other
37
What three elements are found in every carbohydrate?
carbon, hydrate, and lipids
carbon, hydrogen, and oxygen
nucleotides, amino acids, and lipids
sucrose, glucose, and fructose
38
Chemistry is ___________.
the study of earth and how it changes
the study of physics and how to blow stuff up
the study of matter and the changes it experiences
the study of chemicals
