8) Which of the following ing represents a common anion found in the human body?

Question

8) Which of the following ing represents a common anion found in the human body? common an 2. CI 9) In Cach, the chemical bonod binding calcium to chlorine s 1. a hydrogen bond 2. a covalent bond- 3. a polar covalent bond 4. an ionic bond 10) Covalent bonds are formed whern I. atoms share, gain or lose electrons atoms share one, two orthree pairs ofelectrons atoms gain a partial positive or negative charge two or more atoms lose electrons at the same time 3. 4. 11) What is heavier, a mol of water or a mol of carbon dioxide? The atomic mass of C 12 g/mol, H- lg/mol, O- 16 g/mol. T both weigh the same, since both are just one mol. both weigh Avogadro's number of grams water is heavier carbon dioxide is heavier 3. 4. 12) Which of the following substances produces electrolytes when dissolved in water? 1. Sucrose 2. Cholesterol 3 NaHCO 4. Glycogen 13) The weakest chemical bond is the _bond. hydrogen 2. ionic 3. polar covalent 4) A molecule might be more soluble in water if it contains? 1. covalent bonds polar covalent bonds 4. ionic bonds 5) If a molecule is produced via dehydration synthesis, which of the following statements is true? 1. The reaction will require the separation of water molecules into the const and oxygen atoms. 2· The product resulting from the reaction will have a less complex chemical structure. The reaction will result in the production of water. The reaction will require the presence of hydrogen. of the following is an organic molecule? 1. Carbon monoxide. 2. Water 3. A protease enzyme. 4. A solution of carbon dioxide in water. Which

Explanation / Answer

8. sodium anion (Na+).

sodium iins are present in abundrnt amount obtained from NaCl and Na2Co3.

9.ionic bond

Ca is metal and Cl in non metal, bind between metal and non metal is always ionic.

10.b)

covalent bonding is due ti sharing of 1electron(single bond),2electron( double bond),3 electrons(triple bond).

11.(d)

carbondioxide is havier because it has higher molecular wieght than water.

12. C)

as it is an ionic compond.

13.a)

hydrogen bond is waekest among iinic and covalent bonds.

14.b)

molrcules with hydrogen bond dissolve faster as it is a weak bond.

15.c)

dehydration is removal of water from any compound.

16. c)

protease enzymes consist of carbond, hydrogen and oxygen bonded covalently so, an organic compound.

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