14. An ionic bond is most likely to form between: (INTERNET) 19. Which of the fo
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Question
14. An ionic bond is most likely to form between: (INTERNET) 19. Which of the following is an organic molecule? (INTERNET) a. Two negatively charged ions. b. Two positively charged ions c. A negatively and positively charged ion. d. Two uncharged atoms a. Water b. Hydrogen gas (Ha) c. A hydrocarbon d. Ammonia (NHs) 15. A covalent bond is most likely to form between: (INTERNET) 20. The precise, three-dimensional shape of a a. Two salts protein is largely determined by: (INTERNET) peptide bonds between adjacent amino acids interactions of the protein with water interaction between R-groups on amino acids within the protein the manner in which the protein can be denatured a. b. A negatively and positively charged iorn c. Two atoms, both of which typically b. become stable by losing an electron c. d. Two atoms, both of which typically become stable by gaining an electron d. 16. In a non-polar covalent bond: (INTERNET) The two atoms forming the bond have a different affinity for the electrons The two atoms forming the bond have the same affinity for the electrons. There are partial charges on the atoms forming the bond. The two atoms forming the bond are held together by opposing charges. a. 21. Which of these is a pure substance that cannot be broken down a chemical reaction? (CHS BOOK - HS) b. a. A molecule b. A mixture c. An element d. An atom c. d. 22. Which of the following statements is NOT true 17. Which of the following is hydrophobic? about water? (CHS BOOK- HS) a. It has a pH of 7.0. b. It is composed of polar molecules. c. It is composed of ionic bonds. d. It is a good solvent. (INTERNET) a. Molecules containing non-polar covalent b. Molecules containing polar covalent or o. Molecules containing polar covalent d. Molecules containing ionic bonds only bonds only ionic bonds bonds only 23. Which is a substance that produces OH-ions when it is dissolved in water? (CHS BOOK- HS) a. A base b. An acid c. A buffer d. Salt 8. Acids: (INTERNET) a. Lost protons in water to gain a negative b. Lost protons in water to gain a positive c. Gain protons in water to gain a positive d. Gain protons in water to gain a negative change 24. Which two elements are always found in amino acids? (CHS BOOK - HS) charge a. Nitrogen and sulfur b. Carbon and oxygen c. Hydrogen and phosphorus d. Sulfur and oxygen charge chargeExplanation / Answer
14) The correct option is c.a negatively charged and a positively charged ion.
An ionic bond is formed between a negatively charged and a positively charged ion.
Negatively charged ion is known as anion and positively charged ion is known as cation. The lone pair of electrons on anion is transferred to empty orbital of cation to form an ionic bond.
15) The correct option is d.two atoms both of which typically become stable by gaining an electron.
A covalent bond is most likely to form between two atoms both of which typically become stable by gaining an electron.
16) The correct option is b. the two atoms forming the bond have the same affinity for electrons.
In a non-polar covalent bond the two atoms forming the bond have the same affinity for electrons.
17) The correct option is a. molecules containing non-polar covalent bonds only.
Hydrophobic means substances which are heate the water, such as hydrocarbons.
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