The atomic number of an element is given by the number of __________ in its nucleus.
A) energy shells
B) electrons
C) neutrons
D) isotopes
E) protons
Correct Answer:
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Q44: When water changes into steam,
A) both a
Q45: A glass containing a layer of oil
Q46: A glass of water with ice cubes
Q47: _ hold their shape to a certain
Q48: A naturally occurring _ is fog.
A) plasma
B)
Q50: The mass number of an element is
Q51: In an ionic bond,
A) electrons have been
Q52: Water is a _ containing oxygen and
Q53: Which of the following pairs of compounds
Q54: In polymerization,
A) more than two compounds have
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