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Biology
Test Description: Ch2 Test
Instructions: Answer all questions to get your test result.
1) The space surrounding the nucleus of an atom contains
A
ions
B
electrons
C
neutrons
D
protons
2) Which one the following makes up a molecule of water?
A
one atom of sodium and one atom of chlorine
B
two atoms of hydrogen and one atom of oxygen
C
one atom of hydrogen and 2 atoms of oxygen
D
one atom of Hydrgen and one atom of Oxygen
3) When salt is dissolved in water, water is the
A
reactant
B
solvent
C
solute
D
solution
4) A substance with a pH of 6 is called
A
neither an acid or a base
B
a base
C
both acid and a base
D
an acid
5) The three particles that make up an atom are
A
neutrons, isotopes and electrons
B
protons, neutrons and electrons
C
positives, negatives and elctrons
D
protons, neutrons, and isotopes
6) The nucleus is makde of
A
protons and electrons
B
protons, electrons, and neutrons
C
protons and neutrons
D
elctrons and neutrons
7) A covalent bond is formed as the result of
A
transferring protons
B
sharing electrons
C
transferring electrons
D
sharing prontons
8) A soloution is a(an)
A
combinations of two or more liquids
B
evenly distributed mixture of 2 or more substances
C
chemical reaction
D
breaking of a chemical bond
9) Suspensions are mixtures
A
both a and b
B
of water and nondissolved material
C
in which the components are evenly distributed throughout the solution
D
neither a or b
10) Which of the following terms describes a substance formed by the combination of two or more elements in definite proportions?
A
enzyme
B
isotope
C
compound
D
nucleus
*select an answer for all questions
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