KS practice #3 of 14 (Water/ Carbon chemistry)

Which property of water is most responsible for plants being able to transport water from their roots to their leaves?

• the attraction between molecules

• a capacity to dissolve many substances

• the ability to form a low-density crystalline structure when frozen

• a capacity to absorb large amounts of energy as temperature increases

Tags

NGSS.HS-ESS2-5

Trees are typically able to transport water from their roots to their stems and leaves. Which statement describes the property of water that most supports the transportation of water to all parts of a tree?

• Water forms a crystalline structure when it freezes.

• Water dissolves fewer substances than any other liquid.

• Water has strong attractions to itself and many other molecules.

• Water can absorb large amounts of energy with minimal temperature changes.

Carbon can combine with many different elements but frequently combines with oxygen, hydrogen, and nitrogen to form organic molecules. Which statement best explains why carbon is able to form a large number of different molecules?

• Carbon forms only ionic bonds.

• Carbon can form only ring structures.

• Carbon can form four covalent bonds.

• Carbon forms small, simple structures.

Which characteristic allows carbon atoms to form chains and rings with other carbon atoms?

• Carbon has several forms.

• Carbon can form four covalent bonds.

• Carbon is the fourth most abundant element in the universe.

• Carbon is a structural part of lipids, carbohydrates, proteins, and nucleic acids

The opening of the stomata allows water to evaporate from inside the leaf in a process known as transpiration. As this occurs, water molecules cling to one another and pull water in a continuous stream up the stem of the plant from the roots to the leaves. Which property of water makes this movement possible?

• cohesion

• freezing point

• high specific heat

• temperature-dependent density

Tags

NGSS.HS-ESS2-5

Cells are largely made of organic compounds that contain carbon. Which property of the carbon atom makes it an essential component of organic compounds?

• Carbon is a nonmetal.

• Carbon oxidizes to carbon dioxide.

• Carbon is solid at room temperature.

• Carbon can form four covalent bonds.

Tags

NGSS.HS-PS1-2

Which of the following is a property of water that allows a water strider to walk on the surface of water?

• solubility

• cohesion

• high specific heat

• low freezing point

Tags

NGSS.HS-ESS2-5

The element carbon has multiple bonding patterns. Which bonding pattern CANNOT be formed by carbon? (more than 4 bonds)

• C—C

• C—C—C

• C∙C∙C

• C≡C≡C

Tags

NGSS.HS-LS1-6

What property of water allows it to act as a universal solvent, facilitating chemical reactions in living organisms?

• Water has a high specific heat.

• Water is non-polar.

• Water has a high surface tension.

• Water is a polar molecule.

Why is carbon considered the backbone of organic chemistry?

• Carbon can form stable bonds with many elements, including itself.

• Carbon is the most abundant element in the universe.

• Carbon is a noble gas.

• Carbon can only form single bonds.