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22 questions
An electrically charged atom or group of atoms is a/an
atom
element
molecule
ion
Anything that takes up space and has mass is
an element
matter
a molecule
an atom
A unique substance composed of atoms having the same atomic number is a/an
electron
atom
element
substance
The smallest particle of a compound, formed when atoms combine chemically is a/an
atom
element
compound
molecule
These subatomic particles are responsible for most of an atom's mass
Proton, neutron, electron
Protons and valence electrons
Neutrons and electrons
Protons and neutrons
An atom has 6 protons, 6 neutrons, and 6 electrons. What is the atomic mass of this atom?
6
12
18
can't figure this out with only this information
An atom has 6 protons, 6 neutrons, and 6 electrons. What is the atomic number of this atom?
6
12
18
can't figure this out with only this information
An atom has 6 protons, 6 neutrons, and 6 electrons. What element is this?
carbon
oxygen
hydrogen
phosphorus
Because of its ________, water is an excellent solvent.
The ability of water to maintain a relatively constant temperature and thus prevent sudden changes is because of its high
Which of the following are organic compounds?
Fats
Carbohydrates
Calcium carbonate
DNA
Carbon dioxide
The building blocks of fat are
fatty acids and glycerol
fatty acids only
glycerol only
lipids and waxes
These monomers contain C, H, O, N, and P.
Amino acids
DNA
Fatty Acids
Nucleotides
The single most important fuel source for our body's cells is
carbohydrates
starches
monosaccharides
polysaccharides
An _________ is a biological catalyst.
Genes are made of _______ (hint: it is one of the types of macromolecules)
Which term does not belong in the grouping?
adenine
guanine
glucose
thymine
Which term does not belong in the grouping?
DNA
ribose
phosphate
deoxyribose
Which term does not belong in the grouping?
amino acid
glycerol
polypeptide
protein
Durig polymer digestion, water as H+ and OH- ions would
be a product of the reaction
enter between monomers, bond to them, and keep them apart
act as a catalyst
not be involved at all in this reaction
Another name for the chemical reaction of digestion of polymers is
dehydration
hydrolysis
synthesis
displacement reaction
If the monomers are amino acids, they may differ from each other by their
R group
Amino group
Carboxyl group
Peptide group
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