Section I: Circle the corfell u 1. What are the characteristics of a gas? a. ind

Question

Section I: Circle the corfell u 1. What are the characteristics of a gas? a. indefinite shape and volume b. indefinite shape, but definite volume c. definite shape and volume d. none of the above e. all of the above 2. A molecule contains hydrogen bonding if it contains hydrogen covalently bonded to a fluorine, oxygen, or nitrogen. b. chlorine, fluorine, or iodine. c. sulfur, oxygen, or fluorine. d. oxygen or nitrogen. e. nitrogen, fluorine, oxygen, or nitrogen. 3. The forces between polar molecules are known as a. hydrogen bonding. b. ion-dipole forces. c. dipole-dipole forces. d. dispersion forces. e. ionic forces. 4. Capillary action occurs because a. cohesive forces are greater than adhesive forces. b. adhesive forces equal adhesive forces. c. adhesive forces are greater than cohesive forces d. surface tension is high. e. surface tension is low 5. Which of the following statements is true? a. Intermolecular forces are generally stronger than bonding forces. b. The potential energy of molecules decreases as they get closer to one another c. Energy is given off when the attraction between two molecules is broken. d. Increasing the pressure on a solid usually causes it to become a liquid. e. None of the above is true.

Explanation / Answer

1)

Gas do not have definite shape or volume

Answer: a

2)

N, O and F are most electronegative elements in periodic table

hydrogen should be bonded to them

Answer: a

3)

polar molecules are called dipoles

So, force between them is called as dipole-dipole forces

Answer: c

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