Chemistry Quiz

What does the atomic number of an element represent?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the outer shell

• The total number of protons and neutrons

What is the atomic mass of an element?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The total number of protons and neutrons

• The number of electrons in the outer shell

How many valence electrons are in the outermost shell of elements in Row 2 of the Periodic Table?

• 2

• 4

• 6

• 8

Why do atoms seek to fill their valence shell?

• To become positively charged

• To become negatively charged

• To become stable

• To become unstable

What are valence electrons?

• Electrons in the innermost shell

• Electrons in the outermost shell

• Electrons in the nucleus

• Electrons in the middle shell

What does the mass number of an element indicate?

• The number of protons only

• The number of neutrons only

• The total number of protons and neutrons

• The number of electrons only

What type of bond forms between the positively charged hydrogen of one molecule and the negatively charged oxygen of another?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

What property of ice allows it to insulate life under bodies of water?

• Its density

• Its temperature

• Its color

• Its transparency

What is the ability of H2O molecules to stick together called?

• Adhesion

• Cohesion

• Moderation

• Solvent

What causes the moderation of temperature in water?

• Ionic bonds

• Covalent bonds

• Hydrogen bonds

• Metallic bonds