Test #2

A insect like 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)

• low surface tension of water

Tags

NGSS.MS-PS2-5

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

Tags

NGSS.MS-PS1-1

Water travels up from the roots of a tree to the top because of

• adhesion and cohesion

• surface tension

• specific heat capacity

• density of water compared to ice

As you add drops of water to the surface of a coin, each drop sticks to the other water droplet because of ________________, and sticks to the penny because of ______________.

• adhesion, cohesion

• cohesion, adhesion

• capillary action, specific heat

• specific heat, capillary action

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils
• polar sugar molecules
• salt made of a positive sodium ion and a negative chloride ion
• all of the substances will dissolve easily in water

Tags

NGSS.HS-PS1-3

Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?

• adhesion

• surface tension due to cohesion

• solvent properties

• nonpolar

Which of the following contains the genetic code for protein synthesis?

• carbohydrate
• lipid
• protein
• nucleic acid

Tags

NGSS.HS-LS1-6

NGSS.HS-LS1-1

What are the building blocks of proteins?

• amino acid
• fatty acid
• nucleotide
• lipid

Tags

NGSS.HS-LS1-6

What are the single sugars that are the building blocks of carbohydrates?

• monosaccharides
• disaccharides
• polysaccharides
• amino acid