1 / 25

Thermochemistry Review

Thermochemistry Review. The number of degrees between the freezing point of water and the boiling point of water on the Celsius scale is:. 0 100 180 273. The smallest change in temperature is represented by:. one Celsius degree one Fahrenheit degree one Kelvin one centigrade degree.

luka
Download Presentation

Thermochemistry Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Thermochemistry Review

  2. The number of degrees between the freezing point of water and the boiling point of water on the Celsius scale is: • 0 • 100 • 180 • 273

  3. The smallest change in temperature is represented by: • one Celsius degree • one Fahrenheit degree • one Kelvin • one centigrade degree

  4. If the same amount of heat were applied to four samples, which sample would have its temperature raised the most? • c = 0.200 J/goC • c = 0.450 J/goC • c = 0.650 J/goC • c = 2.200 J/goC

  5. Which of the following tools would be used in an experiment to calculate heat transfer between two objects? • Calorimeter • Barometer • Thermometer • Meter Rule • More than one correct answer

  6. List the phases of water in order, from the phase with the slowest molecular movement to the phase with the fastest molecular movement. • Gas-Liquid-Solid • Liquid-Solid-Gas • Solid-Liquid-Gas • Gas-Solid-Liquid

  7. The temperature at which water changes to steam is known as the: • boiling point. • evaporation temperature. • sublimation plateau. • melting point.

  8. When you put ice in a drink to cool it: • coldness is transferred from the ice to the warmer drink. • heat is transferred from the warmer drink to the cooler ice. • heat from the ice is lost to the warmer liquid around it. • the ice cracks and releases cold air molecules that cool off the drink.

  9. The amount of thermal energy or heat stored in an object depends on: • the mass of the object. • the temperature of the object. • the amount of energy that the particular material stores per degree of temperature. • All of the above

  10. When thermal energy flows, it raises the temperature of some substances more than others. This property of a substance is called: • specific heat. • latent heat. • dew point. • equilibrium.

  11. If you hold a paper cup containing hot chocolate in your hand, thermal energy: • does not flow. • flows from the air to the hot chocolate. • flows from the hot chocolate to your hand. • flows from your hand to the hot chocolate.

  12. Which of the following has a melting point greater than room temperature? • oxygen • water • iron • bromine

  13. Which of the following about an ice cube floating in a glass of water is correct? • The temperature of the ice cube increases. • The temperature of the ice cube decreases. • The temperature of the ice cube remains constant. • The temperature of the ice cube will fluctuate.

  14. The quantity of heat required to change the temperature of 1 g of a substance by 1C is defined as ____. • a joule • specific heat • a kilocalorie • density

  15. Which of the following substances has the highest specific heat? • steel • water • alcohol • chloroform

  16. The amount of heat needed to melt solid at a constant temperature is called ____. • heat of fusion • heat of solidification • heat of reaction • heat of vaporization

  17. During a phase change, the temperature of a substance ____. • increases • decreases • remains constant • may increase or decrease

  18. Which of the following is equal to 273 Kelvin? • -20 Celsius • 0 Celsius • 273 Celsius • 373 Celsius

  19. To calculate the amount of heat absorbed as a substance melts, which of the following information is NOT needed? • the mass of the substance • the specific heat of the substance • the change in temperature • the density of the sample

  20. A/An _____ is a substance that slows down the rate of a reaction. • catalyst • inhibitor • reactant • product

  21. A/An _____ lowers the activation energy required for a reaction to take place. • catalyst • inhibitor • reactant • product

  22. A collision requires _____ to be effective. • only enough energy • favorable orientation • enough energy and favorable orientation • a reaction mechanism

  23. In an exothermic reaction, equilibrium shifts _____ when temperature is raised. • to the left • to the right • to the center • none

  24. In an endothermic reaction, equilibrium shifts _____ when temperature is lowered. • to the left • to the right • to the center • none

  25. At what stage of a reaction do atoms have the highest energy? • reactant stage • product stage • activated complex formation • The stage of highest energy depends on the atom.

More Related