23 Questions
What percentage of an organism's total body weight is made up of water?
60-70%
What type of bond is responsible for the attraction between a slightly positive hydrogen to a slightly negative oxygen or nitrogen?
Hydrogen bond
What property of water is responsible for preventing large temperature changes in the body?
High heat capacity
What property of water is responsible for sweating cooling us off?
High heat of vaporization
What is a solution?
Water with dissolved solutes
What is the transport medium that carries dissolved nutrients and waste in the body?
Blood
What type of molecules attract water and are hydrophilic?
Polar molecules
What is the property of water responsible for ice floating on liquid water?
Expanding as it freezes
What is the difference between hydrophilic and hydrophobic molecules?
Hydrophilic molecules attract water, while hydrophobic molecules do not
What is the property of water responsible for water molecules clinging to each other through hydrogen bonds?
Cohesion
What is the property of water that prevents large temperature changes in the body?
High heat capacity
What is the term used to describe the attraction between a slightly positive hydrogen to a slightly negative oxygen or nitrogen?
Hydrogen bond
What is the term used to describe molecules that do not attract water and are nonpolar?
Hydrophobic
What is the pH range of a neutral solution?
7 to 14
What is the pH of normal gastric fluid?
<3.5
What is the difference between acids and bases?
Acids dissociate in water, releasing hydrogen ions, while bases take up hydrogen ions or release hydroxide ions
What is the pH of a basic solution?
7
What is a buffer?
A solution that resists changes in pH when acids or bases are added to it
What is the pH of stomach acid?
<3.5
What is the role of carbonic acid and bicarbonate ions in the body?
They act as buffers in the blood
What is the pH range of an acidic solution?
<7
What is the pH of sodium hydroxide?
14
What is the pH range of the pH scale?
0 to 14
"Test Your Knowledge: The Fascinating Properties of Water Molecules!" Take this quiz to learn more about the unique characteristics of water molecules, including their polarity and the role hydrogen bonds play in creating special properties. Challenge yourself with questions on the abundance of water in organisms and the partial charges of hydrogen and oxygen atoms. Become a water molecule expert today!
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