Question

question 25
many substances dissolve in water. this allows them to quickly and easily travel throughout the body. what allows this to happen?
a this is possible because water is a liquid
b this is possible because water is a polar molecule
c this is possible because water has a neutral ph
question 26
dehydration synthesis occurs when small molecules combine to form a larger molecule, removing a molecule of water in the process.
a true
b false

Explanation:

Question 25

• Water being a liquid (Option A) is not the main reason for its ability to dissolve many substances.
• Water's neutral pH (Option C) is not directly related to its dissolving ability.
• Water is a polar molecule (Option B). The polar nature of water (with a slightly positive and a slightly negative end) allows it to interact with and dissolve many polar and ionic substances. This property is crucial for substances to travel throughout the body as they can dissolve in the aqueous environment (like blood plasma which is mostly water).

• Dehydration synthesis is a chemical reaction where smaller molecules (monomers) combine to form a larger molecule (polymer). In this process, a molecule of water is removed. For example, when glucose molecules combine to form starch, water is removed.

Answer:

B. this is possible because water is a polar molecule

Question 26