CHEM 1010 Chapters 4, 5, & 6 Exam
Questions with Solutions.
Why can't we see atoms? - Answer We see with light energy & the wavelength of light is
larger than the atom & is not reflected
The cathode ray consists of ____ - Answer Negatively charged particles
Which of the following experiments helped to determine the charge of an electron & (indirectly)
its mass? - Answer R. Millikan's oil drop experiments
Which of the following statements does not describe a proton? - Answer It orbits around the
nucleus of an atom.
The following statement described which subatomic particle? It is located outside of the
nucleus. - Answer An electron.
Which element has the atomic number of 12? - Answer Mg
What does the following element description actually mean? Hydrogen-2 - Answer A
hydrogen with one neutron & one proton
Isotopes of the same element have a different number of ____ - Answer Neutrons
Rank the following by the relative amounts of energy, from most energetic to least: - Answer
Gamma rays, blue light, red light, radio waves
Which of the following atoms has the smallest atomic radius? - Answer F
Which of the beams is due to an energetic non-visible light wave? - Answer B (straight line)
Which of the following statements best describes the strong nuclear force - Answer The
force is very strong but has a very short range.
When ^226 88 Ra decays by emitting an alpha particle, what is the atomic number of the
resulting nucleus? What is the resulting atomic mass? - Answer Atomic number - 86. Atomic
mass - 222.
Questions with Solutions.
Why can't we see atoms? - Answer We see with light energy & the wavelength of light is
larger than the atom & is not reflected
The cathode ray consists of ____ - Answer Negatively charged particles
Which of the following experiments helped to determine the charge of an electron & (indirectly)
its mass? - Answer R. Millikan's oil drop experiments
Which of the following statements does not describe a proton? - Answer It orbits around the
nucleus of an atom.
The following statement described which subatomic particle? It is located outside of the
nucleus. - Answer An electron.
Which element has the atomic number of 12? - Answer Mg
What does the following element description actually mean? Hydrogen-2 - Answer A
hydrogen with one neutron & one proton
Isotopes of the same element have a different number of ____ - Answer Neutrons
Rank the following by the relative amounts of energy, from most energetic to least: - Answer
Gamma rays, blue light, red light, radio waves
Which of the following atoms has the smallest atomic radius? - Answer F
Which of the beams is due to an energetic non-visible light wave? - Answer B (straight line)
Which of the following statements best describes the strong nuclear force - Answer The
force is very strong but has a very short range.
When ^226 88 Ra decays by emitting an alpha particle, what is the atomic number of the
resulting nucleus? What is the resulting atomic mass? - Answer Atomic number - 86. Atomic
mass - 222.
