FREE AND STUDY GAMES ABOUT CHAPTER 10:CHEMISTRY

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FREE AND STUDY GAMES ABOUT CHAPTER 10:CHEMISTRY

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -42 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: If kinetic energy is neither lost nor gained, a collision is called

Answer:

V'P'=VP

Question 2: When heated, a pure crystalline solid will

Answer:

exhibit a sharply defined melting temperature Question 3: A sample of carbon dioxidee gas is in equilibrium with solid dry ice. If the temperature of the system increases

Answer:

vapor pressure increases Question 4: Which factor is the most important in determining the average kinetic energy of gas particles?

Answer:

temperature

Question 5: Liquids diffuse more slowly than gases beacause

Answer:

liquids cannot be compressed

Question 6: If water molecules were nonpolar water would probably

Answer:

be a gas at room temperature Question 7: According to the equation KE=1/2mv^2, is hydrogenmolecules and oxygen molecules are at the same temperture, hydrogen molecules have

Answer:

higher average speed

Question 8: Sublimination involves changing from a

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solid to gas Question 9: The process by which gas particles under pressure flow through a tiny opening called ___

Answer:

temperature Question 10: Water has an unusually high molar enthalpy of vaporization because of its

Answer:

hydrogen bonding Question 11: The kinetic-molecular theory of gases assumes that the particles of an ideal gas are separted by great distances. This implies that the gas particles are considered to have no

definite:

Answer:

volume Question 12: The pressure exerted by a vapor in equilibrium with it's corresponding liquid at a given temperature is its

Answer:

diffusion

Question 13: When energy as heat is applied to a liquid-vapor system at equilibrium, a new equilibrium state will have

Answer:

equal amounts of liquid and vapor Question 14: _______ describes the properties of solids, liquids, and gases in terms of the motion of particles

Answer:

pressure Question 15: If a gas and a liquid are at the same temperature and pressure, diffusion occurs

much faster in the gas because:

Answer:

the particles move fster in a gas and there is a greater distance

Question 16: Because liquids and gases flow, they are called

Answer:

Kinetic-molecular theory

Question 17: Which gas is most likely to deviate from ideal behavior?

Answer:

NH3 Question 18: Liquids and solids are much denser than gases because the particles of liquids and solids have a

Answer:

closer arrangement Question 19: An increase in pressure exerted on a liquid does not compress the liquid as much

as the same increase in pressure compress a gas because:

Answer:

particles are more closely packed in liquids

Question 20: A solid's molar enthalpy of fusion is the energy that is:

Answer:

absorbed when a solid melts

Question 21: The separation process of paper chromatography can be explained by

Answer:

capillary action Question 22: The smallest portion of a crystal lattice that shows the 3d pattern of the entire lattice is its

Answer:

newton Question 23: the amount of energy required to melt 1 mol of a solid at its melting point is its

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pressure Question 24: If the particles in a sample of matter are attracted to each other but can move past

each other easily, the matter is a:

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Liquid Question 25: Covalent molecular crystals have very low melting point, while covalent network crystals have very high melting point because

Answer:

the forces that hold the molecules together in molecular crystals are weaker than those that holddd molecules or atoms together in network crystals.Question 26: Which of tthe folowing is true for the melting and freezing points of a pure substance?

Answer:

The melting point is the same as the freezing point.