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Questions and Answers
What is the charge of an electron?
What is the charge of an electron?
- Electrically neutral
- Negative (correct)
- Neutral
- Positive
What is the charge of a proton?
What is the charge of a proton?
- Electrically neutral
- Positive (correct)
- Neutral
- Negative
What is the atomic number of an element defined as?
What is the atomic number of an element defined as?
- The number of electrons in the nucleus
- The number of neutrons in the nucleus
- The number of protons in the nucleus (correct)
- The sum of protons and neutrons in the nucleus
What is the relationship between the atomic number and the number of electrons in an electrically neutral atom?
What is the relationship between the atomic number and the number of electrons in an electrically neutral atom?
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What defines the atomic mass of an atom?
What defines the atomic mass of an atom?
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What term is used to describe atoms of the same element with different atomic masses?
What term is used to describe atoms of the same element with different atomic masses?
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In the established scale, how is 1 atomic mass unit (amu) defined?
In the established scale, how is 1 atomic mass unit (amu) defined?
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What relationship does A ≅ Z + N represent?
What relationship does A ≅ Z + N represent?
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How many atoms or molecules are present in one mole of substance?
How many atoms or molecules are present in one mole of substance?
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Which equation relates atomic weight in amu per atom to grams per mole?
Which equation relates atomic weight in amu per atom to grams per mole?
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When is it convenient to use amu per atom or molecule for atomic weight?
When is it convenient to use amu per atom or molecule for atomic weight?
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