Isotopes, Atomic Mass, and Periodic Table Classification Quiz

Why is Chlorine-35 more abundant than Chlorine-37?

• Because its atomic mass is closer to the average atomic mass of chlorine

• Because it is radioactive

• Because it is heavier

• Because it is a metal

Classify Si (Silicon) as a metal, metalloid, or nonmetal.

• Metal

• Metalloid

• Nonmetal

• Noble gas

Classify Ar (Argon) as a metal, metalloid, or nonmetal.

• Metal

• Metalloid

• Nonmetal

• Noble gas

Which two elements from the list (Li, Cs, N, O) have the most similar chemical properties?

• Li and Cs

• N and O

• Li and N

• Cs and O

Which of the following is a nonmetal?

• Ti

• K

• O

• Si

Which of the following is a metalloid?

• Ge

• K

• O

• Ar

Which element is a noble gas?

• Ge

• Ti

• Ar

• K

What is the main factor that determines the chemical properties of elements in the same group?

• Number of protons

• Number of neutrons

• Number of valence electrons

• Atomic mass

Which isotope of chlorine is less abundant?

• Chlorine-35

• Chlorine-37

• Both are equally abundant

• Chlorine-36

Which of the following elements is a metal?

• Ge

• Si

• K

• O