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