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# Chapter 10 - Review States of Matter - PowerPoint PPT Presentation

Chapter 10 - Review States of Matter. Milbank High School. Chapter 10 - Review. What happens to the range of energies of the molecules in matter when the temperature is increased? What happens to the average kinetic energy of the particles in a sample of matter as the temperature is increased?.

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### Chapter 10 - ReviewStates of Matter

Milbank High School

• What happens to the range of energies of the molecules in matter when the temperature is increased?

• What happens to the average kinetic energy of the particles in a sample of matter as the temperature is increased?

• Consider an iron ball and an aluminum ball. If the two balls were at the same temperature, how would their average kinetic energies compare?

• Which temperature scale provides a direct measure of the average kinetic energy of a substance?

• What instrument is normally used to measure atmospheric pressure?

• What is the SI unit of pressure?

• How does the atmospheric pressure at altitudes below sea level compare with atmospheric pressure at sea level?

• What volume does 3.00 moles of gas particles occupy at STP?

• What is the volume occupied by 2.20 mol of hydrogen at STP

• What is the number of moles of gas in 20.0 L of oxygen at STP

• What is the number of molecules of nitrogen in 11.2 L at STP?

• What is the volume occupied by 71.0 g of chlorine gas at STP?

• What is the number of grams of neon present in 78.4 L of neon at STP?

• What happens when a gas is heated?

• The average kinetic energy of the particles of a substance is proportional to the ____ of the substance.

• The temperature at which the motion of particles theoretically ceases is ____

• What is the pressure of one standard atmosphere?

• Standard conditions when working with gases are defined as ____.

• The pressure of a gas in a container is 152 mm Hg. This is equivalent to _____ atm.

• Which states of matter can flow?

• Which would have the greatest kinetic energy: steam at 200 oC, or water at 373 K

• What happens to the evaporation rate of a liquid as the liquid is cooled?

• If heat is added to a boiling liquid, what happens to the temperature of the liquid?

• What types of forces exist between particles of a liquid?

• The first particles to evaporate from a liquid are ____.

• Which of the following will evaporate fastest: water at 20 oC, or water at 40 oC?

• The direct change of a substance from a solid to a gas is called ____.

• What is the pressure when a liquid is boiling at it’s normal boiling point?

• When the vapor pressure of a liquid is equal to atmospheric pressure, the liquid ____.

• Water could be made to boil at 105 oC instead of 100 oC by ___.

### Chemistry – Chapter 11 ReviewThermochemistry: Heat and Chemical Change

Milbank High School

• How many joules are there in 148 calories? (1 cal = 4.18 J)

• What is the amount of heat (in calories) required to raise the temperature of 200 g of Aluminum by 10 oC? (specific heat of Al = 0.21 cal/g x oC)

• What is the specific heat of a substance if 1560 calories is required to raise the temperature of a 312 gram sample by 15 oC?

• How much heat does it take to warm 16 g of pure water from 90.0 oC to 100.0 oC? (specific heat of water = 4.18 J / g x oC)

• When 45 g of an alloy at 52 oC is dropped into 100.0 g of water at 25 oC, the final temperature is 37 oC. What is the specific heat of the alloy? (in calories/g x oC)

• A piece of metal is heated, and then submerged into cool water. What happens to the temperature of the metal, and the temperature of the water?

• How does a calorie compare to a joule?

• Two objects are sitting next to each other in direct sunlight. Object A gets hotter than object B. How does the specific heat of object A compare to object B?

• Compared to 100 g of iron, a 10 g sample of iron has _____ specific heat.

• A process that absorbs heat is called a(n) _____ process.

• If you were to touch the flask in which an endothermic reaction were occurring, how would it feel?

• What are valid units for specific heat capacity?

• What does the symbol “H” stand for?

• Calculate the energy required to produce 7.00 mol Cl2O7 based on the following given equation: 2Cl2(g) + 7O2(g) + 130 kcal  2 Cl2O7(g)

• If the heat involved in a chemical reaction has a negative sign, then heat is ____ the surroundings.

• What is the standard heat of reaction (H) for this reaction:

C2H4(g) + H2(g) C2H6(g)

(Hof for C2H4(g) = +52.5 kj/mol; and Hof for C2H6(g) = -84.7 kj/mol)

• The change in enthalpy is equal to _____. (give the formula)

• To determine the heat change for a reaction in an aqueous solution, _____.

• What is the amount of heat needed to melt one mole of a solid called?

• What is the heat of solution?