Chemistry EOG Questions

A chemist is looking for an element that reacts similarly to the element lithium (Li). Which would be the best choice?

• gold (Au)

• neon (Ne)

• fluorine (F)

• sodium (Na)

Elements in the same column of the periodic table of the elements all

• have the same number of protons.

• share the same atomic structure.

• have similar physical characteristics.

• share the same number of neutrons.

Which best describes Groups 3 (IIIB) through 12 (IIB) of the periodic table?

• alkaline earth metals

• transition metals

• metalloids

• nonmetals

What best describes the reactivity of alkali metals?

• Reactivity increases left to right across a period.

• Reactivity decreases left to right across a period.

• Reactivity increases down a group.

A student finds that an unknown element readily reacts with alkali metals. Which is the best conclusion about the unknown element?

• It is a noble gas.

• It is in Group 16 (VIA).

• It is in Group 17 (VIIA).

• It is an alkaline earth metal.

Which element belongs in the least reactive group of elements on the periodic table?

• neon (Ne)

• silver (Ag)

• carbon (C)

• potassium (K)

Which most accurately represents the changes in the physical state of elements in Period 4?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

The physical properties of element X are shown in the table below. Which most likely represents the identity of element X?

• carbon (C)

• copper (Cu)

• iodine (I)

• sulfur (S)

Which property of sodium (Na) can be determined based on its location on the periodic table?

• It is a solid metal at room temperature.

• It is a liquid metal at room temperature.

• It is a solid nonmetal at room temperature.

Which elements are most likely to react in the same manner in a chemical reaction?

• elements in the same group

• elements in the same period

• elements with similar atomic masses