Chpt 2 Part 2 Water Pre-Lecture Quiz SP26

What do cohesion, surface tension, and adhesion have in common with reference to water?

• All are produced by covalent bonding.

• All have to do with ionic interactions.

• All are results of the structure of the hydrogen atom.

• All are properties related to hydrogen bonding.

What are nonpolar molecules that cluster away from water molecules called?

• Ionic

• Hydrophobic

• Hydrophilic

• None of the listed responses is correct.

Adhesion is best described as which of the following?

• The process by which a crystalline lattice forms

• The process that contributes to the transport of water and dissolved nutrients in plants by causing water molecules to tug on other water molecules

• A property of water that helps moderate Earth's temperature

• The clinging of one substance to another substance

In a group of water molecules, hydrogen bonds form between which of the following?

• Two hydrogen atoms in different water molecules

• The oxygen atoms in different water molecules

• The oxygen atom in one water molecule and a hydrogen atom in another water molecule

• The hydrogen atoms in a single water molecule

Tags

NGSS.HS-ESS2-5

How does the polarity of water contribute to its ability to dissolve so many substances?

• Water's polarity allows it to form covalent bonds with many substances.

• Because it is polar, water forms ionic bonds with the ions in substances such as NaCl (salt).

• Because it is polar, water's negatively charged oxygen atoms and positively charged hydrogen atoms are attracted to positively and negatively charged ions and molecules.

• Natural water has a pH of approximately 5.6, which is slightly acidic. Acids can dissolve more substances than bases can.

The amount of heat required to change the temperature of 1 g of any substance by 1°C is defined as __________.

• 1 calorie

• the heat of vaporization of that substance

• 1 kilocalorie

• the specific heat of that substance

Tags

NGSS.HS-PS3-4

You can fill a glass of water to just slightly above the rim without the water spilling over the glass. What property of water best explains this phenomenon?

• Adhesion

• Its polarity

• Surface tension

• None of the listed responses is correct.

Water is a polar molecule. What does this statement mean?

• That water molecules are linear, like a pole

• That the atoms in water have equal electronegativities

• That atoms in the molecule have partial charges as a result of unequal sharing of electrons in a covalent bond

• That water is one of the many hydrophobic molecules

The tendency of water molecules to stay close to each other as a result of hydrogen bonding __________.

• provides the surface tension that allows small animals to move across a water surface

• is called cohesion

• helps to keep water moving through the vessels in a tree trunk

• all answer choices are correct

Tags

NGSS.MS-ESS2-4

An acid is __________.

• a material that resists changes in the pH of a solution

• a compound that donates hydrogen ions to a solution

• any compound with a pH

• any compound that accepts hydrogen ions