Honors Periodic Table Unit Review

Why is the periodic table so useful to scientists?

•  it reminds them what the elements look like
• it can be used to predict how they react
•  it lists the chemical formulas for all of the different compounds
•  it contains the recipes for a variety of different kinds of mixtures

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Every element in the period table:

• combines easily with other elements
• is a solid at room temperature
•  has atoms that are the same size
• has a unique set of properties

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The horizontal rows of the periodic table are known as:

• periods
• groups
• columns
• isotopes

 Use the periodic table to answer the question.
Out of all the lists below, which list contains the three elements that are most alike in their chemical properties?

• O, F, Ne
• Li, Mg, Sc
• Li, Na, K
• H, He, Li

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How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

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How many orbitals does an s sublevel have?

• 1

• 3

• 5

• 7

Electrons fill energy levels and sublevels _____ in energy first.

• lower

• higher

The second energy level (n=2) contains a total of 5 electrons...how many more electrons can fit in the 2nd energy level?

• 0
• 3
• 5
• 7

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Which of the following statements is true about the 3s and the 4s sublevels?

• These sublevels have the same energy
• These sublevels are the same distance from the nucleus
• These sublevels hold different amounts of electrons
• These sublevels have the same shape

Electron cloud is based on

• Quantum Mechanics
• Gold Foil Experiment
• Matter is made up of small particles called atoms
• Nuclear Theory

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