Chemistry Quiz

Which of these elements is most likely to be a good conductor of electricity?

• N

• S

• He

• Fe

An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

• 15 p, 16 n, 15 e

• 16 p, 15 n, 16 e

• 16 p, 31 n, 16 e

• 32 p, 31 n, 32 e

A magnesium ion, Mg2+, has

• 12 protons and 13 electrons.

• 24 protons and 26 electrons.

• 12 protons and 10 electrons.

• 24 protons and 22 electrons.

Which of these pairs of elements would be most likely to form an ionic compound?

• P and Br

• Cu and K

• C and O

• O and Zn

The elements in a column of the periodic table are known as

• metalloids.

• a period.

• noble gases.

• a group.

Which is the correct formula for copper (II) phosphate?

• Cu2PO4

• Cu3(PO4)2

• Cu2PO3

• Cu(PO4)2

The correct name for NH4NO3 is

• ammonium nitrate.

• ammonium nitrogen trioxide.

• ammonia nitrogen oxide.

• hydrogen nitrogen oxide.

What is the formula for the ionic compound formed by calcium ions and nitrate ions?

• Ca3N2

• Ca(NO3)2

• Ca2NO3

• Ca2NO2

The Stock system name for Mn2O7 is

• dimanganese heptaoxide.

• magnesium oxide.

• manganese(VII) oxide.

• manganese(II) oxide.

Which of these elements is chemically similar to oxygen?

• sulfur

• calcium

• iron

• nickel