23. Compounds that do not interact with water, such as oil are known as b. hydro

Question

23. Compounds that do not interact with water, such as oil are known as b. hydrophilic c hydrophobic the 24. The pH scale ranges from 0 to 14. The difference between a pH value of 1 and 2 is the presence of concentration of hydroxide ions. A solution of pH 1 isand a solution of pH 2 is a. 10,000 times; acidic; basic b. 10 times; acidic; acidic c 100 times; acidic; basic d. 1,000 times; acidic; acidic 25. A compound dissolved in solution is theand the compound doing the dissolving is a. Solvent; solute b. Solute; solvent 26. A type of covalent bond in which electrons are shared equally between atoms, resulting in NO positive or negative side of the molecule, is termed a. b. c. d. a polar covalent bond electronegativity a non-polar covalent bond an ionic bond 27. Isotopes are atoms of the same element that differ in their: a. ionic charge. b. number of electrons c. number of protons. d. number of neutrons. 28. Oxygen and hydrogen differ in their electronegativity. Thus a. b. c. d. Hydrogen is attracted to oxygen but does not bond with it they have the same number of protons they can share electrons, but unequally Sometimes oxygen takes electrons completely away from hydrogen 29. In salt, what is the nature of the bond between sodium and chlorine? a. polar covalent b. nonpolar covalent C. hydrogen d. ionic Which of the following is formed by the sharing of electrons between two atoms that do NOT differ in electronegativities? 30. a. b. c. d. e. a hydrogen bond an isotope an ionic bond a non-polar covalent bond a polar covalent bond

Explanation / Answer

Ans- 23-the correct option is (C) i.e. hydrophobic because hydrophobic substances do not get mixed with water.

Ans-24- the correct option is (B) i.e. 10 times, acidic, acidic

Because the pH 1 means (10)-1and pH means (10)-2. All the substance below pH 7 are acidic in nature.

Ans-25 the correct option is (B) i.e. solute, solvent.

Ans-26 the correct option is (C) i.e. nonpolar covalent bond

Because non polar covalent bond are those where electron are shared equally.

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