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Chem 1020 C. Questions with Solutions 2026

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Exam of 4 pages for the course CHEM 1020 at CHEM 1020 (Chem 1020 C.)

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Chem 1020 C
How are energy and frequency related - answer the higher the energy, the higher the
frequency

How are frequency and wavelength related? - answer the higher the frequency, the
lower the wavelength

Which neutral element does the following abbreviated configuration correctly describe?
1s2 2s2 2p6 - answer NE (Neon)

What is an atomic orbital? - answer It is a probability cloud that shows the probable
location of an electron within a given atom

piece of aluminum = 10g
volume of cylinder before immersion = 35.0mL
volume after immersion = 38.7mL
what is the density? - answer98.7mL-35mL = 3.7mL = volume
D=M/V
D=10g/3.7mL
D=2.7g/mL

If you remove 2 protons and 2 neutrons from a gold atom (Au), what new element is
formed (if any)? - answerIr (Iridium)

move 2 elements to the left on the PT

If you remove 2 protons and 2 electrons from a sulfur atom (S), what new element is
formed (if any)? - answerSi (Silicon)

move 2 elements to the left... then subtract the 2 electrons that are in Sulfur to get
neutral Silicon

Which of the following elements are in the same period as Magnesium (Mg)? -
answerCl (Chlorine)

periods are rows

Which of the following elements are in the same group as silicon (Si)? - answerC
(Carbon)

groups are columns

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