Water

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Questions and Answers

What property of water allows it to dissolve and dissociate many particles?

  • Cohesion
  • Adhesion
  • Polarity (correct)
  • High heat capacity

What property of water helps in the regulation of temperature in the environment and in living organisms?

  • High heat of vaporization
  • High heat capacity (correct)
  • Density
  • Capillary action

What is the cause of capillary action in water?

  • High heat capacity
  • Cohesion
  • Adhesion (correct)
  • Surface tension

What property of water allows it to protect cells from the effects of dangerous acids and bases?

<p>Amphiprotic nature (D)</p> Signup and view all the answers

What property of water makes it less dense as a solid?

<p>Hydrogen bonds (B)</p> Signup and view all the answers

What property of water allows it to dissolve polar substances?

<p>Polarity (C)</p> Signup and view all the answers

What is the measure of the compactness of a substance?

<p>Density (B)</p> Signup and view all the answers

What property of water is responsible for creating the smallest surface area possible?

<p>Surface tension (D)</p> Signup and view all the answers

What property of water allows it to help regulate the temperature in the environment and in living organisms?

<p>High heat capacity (D)</p> Signup and view all the answers

What property of water allows it to act as either an acid or a base?

<p>Amphiprotic nature (D)</p> Signup and view all the answers

What property of water is responsible for the high boiling point of water?

<p>Hydrogen bonds (A)</p> Signup and view all the answers

What property of water is responsible for the cooling effect during evaporation?

<p>High heat of vaporization (D)</p> Signup and view all the answers

What is the percentage of water in the human body?

<p>Over 70% (C)</p> Signup and view all the answers

What type of bonding does water molecules have?

<p>Covalent bonding (C)</p> Signup and view all the answers

What causes the bent structure of the water molecule?

<p>The two lone pairs of electrons on the oxygen atom (B)</p> Signup and view all the answers

What is the angle between the hydrogen atoms and the oxygen atom in a water molecule?

<p>105 degrees (D)</p> Signup and view all the answers

What type of charge does the oxygen atom in a water molecule have?

<p>Partial negative (D)</p> Signup and view all the answers

What type of forces attract polar molecules to one another?

<p>Dipole-dipole forces (C)</p> Signup and view all the answers

Which form of water is solid?

<p>Ice (A)</p> Signup and view all the answers

Which form of water is liquid?

<p>Rain (B)</p> Signup and view all the answers

Which form of water is gas?

<p>Steam or water vapor (D)</p> Signup and view all the answers

What is the composition of pure water in terms of color, taste, and odor?

<p>Colorless, tasteless, and odorless (A)</p> Signup and view all the answers

How much of the Earth's surface is covered by water?

<p>Two-thirds (A)</p> Signup and view all the answers

What makes water essential for life?

<p>Its structure and properties (A)</p> Signup and view all the answers

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