Environmental Science Water and Nature of Science Review

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

tendency of molecules of the same kind to stick to one another

• cohesion
• adhesion
• solution
• polar molecule

Water molecules are attracted to other kinds of molecules because of the property.

• Cohesion
• Adhesion
• Surface Tension
• Universal Solvent

The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form

• less polar
• more polar
• less dense
• more dense

A water strider can skate along the top of a pond because:

• covalent bonds result in water cohesion
• hydrogen bonds result in water cohesion (surface tension)
• water striders have adapted to take advantage of water cohesion
• low surface tension of water

Why does water move from the roots to the leaves of plants?

• Water is pushed by solutes
• Capillary action pulls the water molecules like a chain
• Water is pulled by gravity
• Water’s cohesion causes it to “pull” towards the leaves

Used for short term (quick) energy.

• carbohydrates
• lipids
• proteins
• nucleic acids

Contains DNA and RNA

• lipids
• carbohydrates
• proteins
• nucleic acids

Building blocks of the body, hair , muscles etc.

• protein
• nucleic acid
• lipids
• carbohydrates

Identify the macromolecule in the picture
*GLUCOSE

• lipid
• protein
• nucleic acid
• carbohydrate