Chemistry Quiz

What happens to the energy of an electron as it moves farther from the nucleus?

• The energy increases

• The energy decreases

• The energy remains the same

• The energy fluctuates

Consider the notation “4p³.” What does the 4 mean? The p? The superscript 3?

• The 4 tells the energy level. The p tells the sublevel. The superscript 3 tells the amount of electrons.

• 4 is the variable, p is the coefficient, and 3 is the exponent.

• 4 is tells the sublevel, p is the energy level, and 3 amount the tells electrons of.

• 4 tells the amount of electrons, p tells the energy level, and 3 tells the sublevel

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NGSS.HS-PS1-1

By using the periodic table, how can you tell how many energy levels an element has?

• By looking at the atomic number

• By looking at the period number

• By looking at the group number

• By looking at the element's symbol

What is meant by valence electrons?

• Electrons in the outermost shell of an atom

• Electrons in the innermost shell of an atom

• Protons in the nucleus of an atom

• Neutrons in the nucleus of an atom

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NGSS.HS-PS1-2

If an element is in family 2A, how many valence electrons does it have? Family 5A?

• 2 valence electrons for family 2A and 5 valence electrons for family 5A

• 3 valence electrons for family 2A and 6 valence electrons for family 5A

• 1 valence electron for family 2A and 4 valence electrons for family 5A

• 4 valence electrons for family 2A and 7 valence electrons for family 5A

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NGSS.HS-PS1-1

The octet rule is a chemical rule of thumb that reflects the observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas. Which of the following best describes the octet rule?

• Atoms tend to have eight electrons in their valence shell.

• Atoms always have eight protons in their nucleus.

• Atoms tend to lose all electrons to become stable.

• Atoms always form eight bonds.

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What are the four types of sublevels?

• s, p, d, f

• a, b, c, d

• x, y, z, w

• 1, 2, 3, 4

How many electrons fit in each of the four sublevels?

• 2, 6, 10, 14

• 2, 4, 8, 16

• 1, 3, 5, 7

• 2, 8, 18, 32

How many electrons fit into a single orbital?

• 1

• 2

• 4

• 8

The Aufbau principle explains the order in which electrons fill orbitals in an atom. Which of the following best describes this order?

• Electrons fill orbitals starting from the highest energy level to the lowest.

• Electrons fill orbitals starting from the lowest energy level to the highest.

• Electrons fill orbitals randomly.

• Electrons fill orbitals based on the atomic number.