Chapter 1, Problem 1.112E

amount of heat required to raise 1 g of water 1°C    a. BTU b. calorie c. joule d. kJ

Name Use the table to answer questions 7 through 9. Students are investigating how water changes as it is heated. They record their results in the table. Temperature (C) Observation -2 ice ice changing to water 10 water 40 water 60 water 100 boiling water

Which statement is true about the particles of a solid when the solid changes into a liquid? A. They stop vibrating.  B. Their kinetic energy increases.  C. They move closer to each other.  D. The attractive force between them increases

What happens to the temperature of the liquid in a cup of water as some of the water evaporates?   A.  The temperature increases because there are fewer molecules to share energy between. B.  The temperature decreases because new molecular bonds form. C.  The temperature decreases because the most energetic molecules escape. D.  The temperature increases because the vapor pressure increases.

When a substance undergoes a change of state, the temperature of the substance   a. always decreases b. can either increase or decrease c. always increases d.always remains the same

6 1 point The amount of heat required to melt 0.02mg of H2O is 12.3J and the amount of heat required to melt 0.16mg of H2O is 36.0J. What type of domain of chemical reaction is this? a. Macroscopic b. Microscopic c. Symbolic microscopic d. Symbolic macroscopic. d a Clear my selection

3. The amount of heat required to change ice to liquid water is ? A. 344 Btu B. 144 Btu C. 114 Btu D. 214 Btu

WHICH OF THE FOLLOWNG PHYSICAL PROCESSES IS EXOTHERMIC? A. BOILING OF WATER B. MELTING OF ICE C.EVAPORATION OF ALCOHOL D.CONDENSATION OF WATER

How much energy is required to heat 10 grams of water from 50 Celcius degrees to its boiling point? Specific heat of water is 4.18J/g- C   a. 2090 J b. 500 J c. 41.8 J d. Not enough information to calculate