1.
Negatively
charged particles in an atom are called
1.
neutrons.
2.
electrons.
3.
protons.
4.
elements.
2.
Substances
that can not be broken down into simpler substances by ordinary chemical
reactions are called
1.
atoms.
2.
compounds.
3.
elements.
4.
molecules.
3.
A
particle with a negative or positive charge is referred to as
1.
electron.
2.
proton.
3.
ion.
4.
isotope.
5.
A
chemical bond where electrons are transferred from one atom to another is a(n)
1.
hydrogen
bond
2.
ionic
bond.
3.
covalent
bond.
4.
none
of the above
6.
The
bond which is found between water molecules is a(n)
1.
hydrogen
bond.
2.
ionic
bond.
3.
covalent
bond.
4.
none
of the above
7.
A
chemical bond in which one pair of electrons is shared between atoms is a(n)
1.
hydrogen
bond.
2.
ionic
bond.
3.
covalent
bond.
4.
none
of the above
8.
All
of the following are organic compounds EXCEPT
1.
nucleic
acids.
2.
water.
3.
proteins.
4.
carbohydrates.
9.
Energy
needed for chemical reactions in the body is provided by the breakdown of
1.
ribonucleic
acid (RNA).
2.
deoxyribonucleic
acid (DNA).
3.
adenosine
triphosphate (ATP).
4.
adenosine
diphosphate (ADP).
10.
Which
of the following describes the most acidic solution?
1.
pH
4
2.
pH
5
3.
pH
7
4.
pH
14
11.
The
building blocks of proteins are
1.
fatty
acids.
2.
nucleic
acids
3.
amino
acids.
4.
monosaccarides.
ANSWERS
1.
electrons
2.
elements
3.
ion
4.
ionic bond
5.
hydrogen bond
6.
covalent bond
7.
water
8.
adenosine triphosphate (ATP)
9.
pH 4
10.
amino acids
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