1 easy chem question

2011-01-29 11:18 am

1.)Chemical InteractionsMatch the terms with the processes that are described.(Each term is used once.)

*ionic attraction,dehydration synthesis, hydrolysis,hydrogen bond, and hydrophobic interaction*

a.)when vegetable oil is mixed with water, the solution separates and the oil molecules all end up in the top phase
b.)a peptide bond is broken
c.)a fatty acid is joined to glycerol by an ester bond
d.)a positively charged dye molecule sticks to negatively charged groups in a bacterial cell wall
e.)a keto-oxygen atom is weakly attracted to the hydrogen of a hydroxyl group

回答 (1)

不用客氣

2011-01-29 11:53 am

✔ 最佳答案

ionic attraction -- d.) a positively charged dye molecule sticks to negatively charged groups in a bacterial cell wall.
(Ionic attraction is formed between a positive charge and a negative charge.)

dehydration synthesis -- c.) a fatty acid is joined to glycerol by an ester bond
(-COOH + -OH → -COO- + H2O It is dehydration as water molecule is eliminated.)

hydrolysis -- b.) a peptide bond is broken
(-CONH- + H2O → -COOH + -NH2 The reaction is hydrolysis.)

hydrogen bond -- e.) a keto-oxygen atom is weakly attracted to the hydrogen of a hydroxyl group
(Hydrogen bond is formed between the keto-oxygen atom and the hydrogen atom of the hydroxyl group.)

hydrophobic interaction -- a.) when vegetable oil is mixed with water, the solution separates and the oil molecules all end up in the top phase
(Vegetable oil is hydrophobic and thus it is immiscible with water.)

參考: micatkie

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