Chemistry of Life Quiz

What is the smallest unit of an element that retains its properties?

• Molecule

• Atom

• Compound

• Cell

Which of the following is the most basic unit of life?

• Organ

• Tissue

• Organism

• Cell

What is the term for a group of organisms of the same species living in a specific area?

• Biome

• Community

• Population

• Ecosystem

Why is water considered a polar molecule?

• It is a universal solvent

• It is non-reactive

• It has an unequal distribution of charges

• It has equal distribution of charges

Which property of water allows it to stick to other substances?

• Adhesion

• Density

• Cohesion

• Surface tension

What is the significance of water's high specific heat?

• It allows water to dissolve many substances

• It causes water to stick to itself

• It prevents rapid temperature changes

• It makes ice less dense than liquid water

Why does ice float on water?

• Ice is hydrophobic

• Ice has a higher specific heat

• Ice is less dense than water

• Ice is denser than water

What is a solvent in a solution?

• The substance that gets dissolved

• The substance that does the dissolving

• The mixture of solute and solvent

• The solid form of a liquid

What does 'hydrophilic' mean?

• Water-fearing

• Solid at room temperature

• Non-polar

• Water-loving

Which of the following is an example of a hydrophobic substance?

• Water

• Oil

• Sugar

• Salt