Module 2 Review Question Preview (ID: 7744)


Some Basic Questions Based Upon The Information In Module 2. TEACHERS: click here for quick copy question ID numbers.

This atomic particle has a negative charge and very little mass.
a) nucleus
b) electron
c) proton
d) neutron

The nucleus of an atom contains which two particles?
a) electrons and neutrons
b) protons and electrons
c) quarks and protons
d) protons and neutrons

This particle is found in the nucleus and has a positive charge.
a) neutron
b) electron
c) proton
d) nucleus

The number of protons in a nucleus determines:
a) atomic mass
b) weighted average
c) mass number
d) atomic number

What caused the scientific community to accept Rutherford's atomic model?
a) Rutherford recreated Thompson's experiment
b) Other scientists repeated the experiment
c) Thompson approved Rutherford's experiment
d) Science explained the complete experiment

Which best explains why changes to the atomic theory were necessary?
a) differing ideas
b) new experimental evidence
c) better funding of science
d) improved technology

Why do scientists need scientific models?
a) They can often be used to make predictions
b) They exactly present the scientific principle being demonstrated
c) They are typically based on mathematical explanations
d) Once established, they become fairly rigid and rarely change over time

Modern atomic theory states that atoms are neutral. How is this neutrality achieved in atoms?
a) having more neutrons than protons or electrons
b) having fewer neutrons than protons or electrons
c) having equal numbers of protons and neutrons
d) having equal numbers of protons and electrons

A neutral atom of sodium (Na) has an atomic number of 11 and a mass number of 23. How many neutrons would be found in the nucleus of this atom of sodium?
a) 34
b) 23
c) 12
d) 11

Two atoms that have the same atomic number but different mass numbers are called
a) compounds
b) ions
c) isotopes.
d) radicals.

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