How are elements arranged in the periodic table?

• in alphabetical order
• in the order in which they were discovered
•  in order of increasing atomic number
•  in order of increasing melting points

The vertical columns in the periodic table are known as:

• groups
• periods
• valences
• isotopes

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Group 18 of the periodic table contains nonreactive elements like helium, neon, and argon. The elements in this group are called:

• alkali metsls
• transition metals
• halogens
• noble gases

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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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The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

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Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

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In what section would Transition Metals be found?

• orange
• light blue
• blue
• white

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