Chemistry EOG Questions

Which group contains elements with the most varied properties?

• noble gases

• alkali metals

• transition metals

• alkaline earth metals

Where would a new highly reactive metal most likely be placed on the periodic table?

• right side

• left side

• middle

• top

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Which characteristic of an element determines its placement in the periodic table?

• mass

• size

• number of neutrons

• number of protons

Which best describes elements found in a column of the periodic table?

• The elements have the same-size atoms.

• The elements have the same atomic number.

• The elements have similar chemical properties.

• The elements are all found naturally in the same physical state.

Johnny is trying to identify a sample of a highly reactive nonmetal. With which elements would his sample most likely be found on the periodic table?

• neon (Ne) and radon (Rn)

• fluorine (F) and bromine (Br)

• silicon (Si) and phosphorous (P)

• sodium (Na) and magnesium (Mg)

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Which of these elements is most reactive?

• neon

• carbon

• sodium

• magnesium

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Which pair of elements has the most similar properties?

• Li and B

• I and Ca

• K and He

• N and P

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Which best describes the purpose for the bold staircase line on the right side of the periodic table?

• to separate gases from liquids

• to separate metals from nonmetals

• to separate lanthanides from actinides

• to separate transition metals from alkaline earth metals

What was observed that led to the arrangement of sixty-three already-known elements by increasing atomic weights in the periodic table?

• A repetition occurs in chemical and physical properties.

• An atomic weight corresponds to the existing abundance.

• The number of neutrons and protons increased by one.

• The chemical compounds formed by the elements increased by one.

Sodium reacts with water. Which element is most likely to have a similar effect to sodium if it is exposed to water?

• carbon

• oxygen

• lithium

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