Atomic Structure & Chemical Bonds Quiz

Which of the following best describes an isotope?

• Atoms with the same number of protons and electrons

• Atoms with the same number of protons but different numbers of neutrons

• Atoms with the same number of neutrons but different numbers of protons

What is the relative charge of a neutron?

• Positive

• Negative

• Neutral

What is the mass number of an element with 12 protons and 13 neutrons?

• 12

• 25

• 13

• 25

Which of the following is a characteristic of metals?

• High electrical conductivity

• Brittle

• Poor conductor of heat

The rows in the periodic table are called:

• Groups

• Periods

• Blocks

What type of bond forms when electrons are shared between atoms?

• Ionic bond

• Covalent bond

• Metallic bond

Which element will most likely form a negative ion?

• Magnesium

• Fluorine

• Sodium

What type of ion does potassium (K) form?

• Negative ion

• Positive ion

• Neutral atom

When magnesium reacts with chlorine, it forms:

• MgCl

• MgCl₂

• Mg₂Cl

Which of the following molecules has a triple bond?

• H₂

• O₂

• N₂