Exploring the Unique Properties of Water

What is the shape of a water molecule?

• V-shaped

• Tetrahedral

• Linear

• Planar

What type of bond connects the hydrogen atoms to the oxygen atom in a water molecule?

• Hydrogen bond

• Covalent bond

• Metallic bond

• Ionic bond

Why does the oxygen atom in a water molecule develop a partial negative charge?

• Because it pulls harder on the shared electrons

• Because it loses electrons to hydrogen

• Because it has more protons than hydrogen

• Because it is less electronegative than hydrogen

What term describes the attraction between the positive end of one water molecule and the negative end of another?

• Ionic bond

• Van der Waals force

• Covalent bond

• Hydrogen bond

What is the boiling point of water compared to other similar substances?

• About 150 degrees lower

• About 100 degrees lower

• About 200 degrees higher

• About 50 degrees higher

Which of the following molecules is a gas at room temperature?

• Water

• Hydrogen sulfide

• Oil

• Salt

Why does salt dissolve in water?

• Because salt is nonpolar

• Because water molecules are nonpolar

• Because water molecules are attracted to the ions in salt

• Because salt molecules are larger than water molecules

Why do water and oil not mix?

• Because water is nonpolar

• Because water is denser than oil

• Because oil is polar

• Because oil is nonpolar

What is the main reason for water's high boiling point?

• Its nonpolar nature

• Its ionic bonds

• Its hydrogen bonds

• Its molecular weight

What do water's properties demonstrate about the relationship between macroscopic and molecular levels?

• They are unrelated

• Macroscopic properties are influenced by molecular structures

• Molecular structures are influenced by macroscopic properties

• They are identical