Question

water
for questions 10–12, write true if the statement is true. if the statement is false, replace the underlined word to make the statement true. write your changes on the line.
__________ 10 water molecules adhere to each other through covalent bonds.
__________ 11 its cohesion allows water to transport nutrients and wastes in plants and animals.
__________ 12 a solution with a ph less than 7 is basic.

Explanation:

Question 10

Water molecules adhere to each other through hydrogen bonds, not covalent bonds. Covalent bonds are within a water molecule (between H and O), while the attraction between water molecules is hydrogen bonding. So the statement is false, and we replace "covalent" with "hydrogen".

Cohesion is the attraction between water molecules, but the transport of nutrients and wastes in plants and animals is due to adhesion (attraction between water and other substances) and also the property of water being a good solvent, but mainly the correct property here for transport (like in xylem and phloem, or in blood) is related to adhesion and also the fact that water can move, but actually, the statement here: Wait, no—wait, cohesion is the sticking together of water molecules, but the transport of nutrients and wastes in plants (like in xylem, it's cohesion and adhesion, but the movement of water with dissolved nutrients in animals (like blood) is because water is a solvent. Wait, no, the original statement: "Its cohesion allows water to transport nutrients and wastes in plants and animals." Is this true? Wait, actually, the transport of nutrients and wastes in plants (e.g., in the xylem, water moves up due to cohesion-tension, and in phloem, water moves with sugars due to osmosis, but the ability of water to carry nutrients is because it's a solvent, but the cohesion here—wait, maybe the statement is true? Wait, no, maybe I made a mistake. Wait, cohesion is the attraction between water molecules, which helps in the continuous column of water in xylem (so water can be pulled up, and that column is maintained by cohesion). And in animals, blood (mostly water) transports nutrients and wastes, and the water's cohesion helps in maintaining the blood volume and flow? Wait, maybe the statement is true? Wait, no, let's check. Wait, the question is: "Its cohesion allows water to transport nutrients and wastes in plants and animals." Wait, actually, the transport of nutrients and wastes is due to water being a solvent (so it can dissolve them) and also the movement of water (like in circulation or in plant vascular systems). But cohesion is the sticking of water to water. So maybe the statement is true? Wait, no, maybe the underlined word is "cohesion" and we need to check. Wait, no—wait, the problem says "write True if the statement is true. If the statement is false, replace the underlined word". So the underlined word is "cohesion". Wait, but is it cohesion or adhesion? Wait, no—wait, the transport of nutrients and wastes in plants: in xylem, water moves up because of cohesion (water sticking to water) and adhesion (water sticking to xylem walls). In animals, blood (water-based) transports nutrients and wastes, and the water's ability to flow is due to its liquidity, but cohesion helps in maintaining the blood as a continuous fluid. Wait, maybe the statement is true? Wait, no, maybe I'm overcomplicating. Wait, let's recall: Cohesion is the attraction between molecules of the same substance (water to water). Adhesion is attraction between different substances (water to other molecules). The transport of nutrients and wastes in plants (e.g., in the xylem, the water column is maintained by cohesion, so water can be pulled up, carrying dissolved minerals). In animals, blood (water) carries nutrients and wastes, and the cohesion of water helps in the blood's flow as a continuous fluid. So maybe the statement is true? Wait, but maybe the intended answer is that it's false and we replace "cohesion" with "adhesion"? No, that doesn't make sense. Wait, no—wait, the transport of nutrients and wastes is because water is a good solvent, and also because it can move. But the cohesion of water allows it to form a continuous column (in plants) which is necessary for transport. So maybe the statement is true. Wait, but I'm confused. Wait, let's c…

A solution with a pH less than 7 is acidic, while a solution with a pH greater than 7 is basic. So the statement is false, and we replace "basic" with "acidic".

Answer:

False, replace "covalent" with "hydrogen"

Question 11