Question

1. what is the number of hydrogen atoms in the compound c6h12o6? a) 6 b) 12 c) 24 d) 18 16. which part of a water molecule is partially negative? a) the entire molecule b) hydrogen atom c) oxygen atom d) both hydrogen atoms 17. which property of water makes it an effective solvent for many ionic and polar substances? a) high heat capacity b) high density c) low freezing point d) ability to form hydrogen bonds 18. what does ph measure? a) the temperature of a solution b) the number of electrons in an atom c) the number of protons in a molecule d) the concentration of hydrogen ions in a solution

Explanation:

Step1: Analyze compound formula

In the formula C6H12O6, the sub - script of H is 12, which represents the number of hydrogen atoms.

Step2: Recall water molecule polarity

In a water molecule (H2O), oxygen is more electronegative than hydrogen. So the oxygen atom has a partial negative charge.

Step3: Understand water as a solvent

Water can form hydrogen bonds with many ionic and polar substances, which makes it an effective solvent.

Step4: Know the definition of pH

pH is defined as the negative logarithm of the hydrogen - ion concentration in a solution.

Answer:

1. b) 12
2. c) Oxygen atom
3. d) Ability to form hydrogen bonds
4. d) The concentration of hydrogen ions in a solution