Question
Which of the following pairs of particles repel each other?
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Answer
proton and proton
Question
Which of the following has a mass approximately equal to the mass of a proton?
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Answer
neutron
Question
Electrons having the lowest energy are found in which energy level?
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Answer
n=1
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-
Question
Which type of electromagnetic radiation is the transfer of energy in the form of heat?
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Answer
Infrared
Question
Isotopes of the same element differ from each other in what way?
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Answer
They have different numbers of neutrons in the nucleus
Question
Which type of radiation has the greatest energy?
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Answer
Gamma
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-
Question
Explain how the overall molecular polarity is determined based on both the electronegativity and the shape of the molecule.
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Answer
While the electronegativity can cancel out each other, the shape of the molecule can also create a tug-of-war effect, allowing different electronegativties to push together or pull apart, balancing out the electronegativities
Question
What is the chemical formula for copper (II) sulfide?
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Answer
CuS
Question
What is the chemical formula for chromium (III) nitrate?
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Answer
Cr(NO₃)₃
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