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Topic 1
. – Matter and Energy
7. Heat and Energy: Recalling facts and definitions
1. Which refers to a form of energy that can be absorbed or released?
1) Temperature 2) Degree 3) Kelvin 4) Heat
2. Which unit is appropriate for measuring heat energy? 4) kilopascal
1) Kilojoules
2) grams
3) Celsius
3. Energy that is stored in chemical substances is called
1) Potential energy 2) Activation energy 3) Kinetic energy 4) Ionization energy
4. Energy due to movement of particles of a substance is called
1) Kinetic energy 2) Entropy energy 3) Potential energy 4) Activation energy
Need Help? Study Book Pg 9 - 10 Set 14 and 16
5. When a substance absorbs heat energy, the process is described as
1) Transmutation 2) Radioactivity 3) Endothermic 4) Exothermic
6. In endothermic processes, heat is
1) Released, only 3) Both absorbed and released
2) Absorbed, only 4) Neither absorbed nor released
7. As a substance undergoes exothermic phase change, heat energy is
3) Both absorbed and released
1) Released, only
2) Absorbed, only 4) Neither absorbed nor released
8. Phase change and energy: Relating phase changes to heat energy
1. Which phase change is exothermic?
1) Freezing 2) Sublimation 3) Evaporation 4) Fusion
2. Which phase change is endothermic?
1) Fusion 2) Condensation 3) Freezing 4) All of the above
3. Which change will result in heat energy being absorbed by the substance?
1) Liquid to solid 2) Gas to liquid 3) Liquid to gas 4) Gas to solid
4. Which phase change is accompanied by the release of heat energy?
1) Gas to liquid 2) Liquid to gas 3) Solid to gas 4) Solid to liquid
5. Which change in iodine is endothermic?
3) I2 (l) ------------> I2(s)
1) I2(g) --------------> I2(s)
2) I2(s) ---------------> I2(g) 4) I2(g) -------------> I2(l)
6. Which phase change correctly shows the release of heat to the surrounding?
1) NH3 (l) -----------> NH3 (g) 3) NaCl(s)) ----------> NaCl(l)
2) CO2 (s) ----------> CO 2(g) 4) H2O (g) -----------> H2O(l) Need Help? Study Book Pg 9 – 10 Set 13 - 15
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7. Which equation shows a phase change of water at 0 C
1) H2O (l) -------------> H2O (g)
3) H2O (s) -------------> H2O (aq)
2) H2O (l) -------------> H2O (s) 4) H2O (s) --------------> H2O (g)
8. Which equation correctly shows liquid/steam equilibrium of water at its boiling point?
1) H2O (l) ------------> H2O (g) 3) H2O (s) ---------> H2O(l)
2) H2O (l) ------------> H2O (s) 4) H2O (s) -----------> H2O (g)
9. The change NH3(g) -------- > NH3(l) is best described as
1) Evaporation, and is exothermic 3) Condensation, and is exothermic
2) Evaporation, and is endothermic 4) Condensation, and is endothermic
10. A change of Iodine solid to iodine gas is best described as
1) Sublimation, in which heat is absorbed 3) Evaporation, in which heat is absorbed
2) Sublimation, in which heat is released 4) Evaporation, in which heat is released
124 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
. – Matter and Energy
7. Heat and Energy: Recalling facts and definitions
1. Which refers to a form of energy that can be absorbed or released?
1) Temperature 2) Degree 3) Kelvin 4) Heat
2. Which unit is appropriate for measuring heat energy? 4) kilopascal
1) Kilojoules
2) grams
3) Celsius
3. Energy that is stored in chemical substances is called
1) Potential energy 2) Activation energy 3) Kinetic energy 4) Ionization energy
4. Energy due to movement of particles of a substance is called
1) Kinetic energy 2) Entropy energy 3) Potential energy 4) Activation energy
Need Help? Study Book Pg 9 - 10 Set 14 and 16
5. When a substance absorbs heat energy, the process is described as
1) Transmutation 2) Radioactivity 3) Endothermic 4) Exothermic
6. In endothermic processes, heat is
1) Released, only 3) Both absorbed and released
2) Absorbed, only 4) Neither absorbed nor released
7. As a substance undergoes exothermic phase change, heat energy is
3) Both absorbed and released
1) Released, only
2) Absorbed, only 4) Neither absorbed nor released
8. Phase change and energy: Relating phase changes to heat energy
1. Which phase change is exothermic?
1) Freezing 2) Sublimation 3) Evaporation 4) Fusion
2. Which phase change is endothermic?
1) Fusion 2) Condensation 3) Freezing 4) All of the above
3. Which change will result in heat energy being absorbed by the substance?
1) Liquid to solid 2) Gas to liquid 3) Liquid to gas 4) Gas to solid
4. Which phase change is accompanied by the release of heat energy?
1) Gas to liquid 2) Liquid to gas 3) Solid to gas 4) Solid to liquid
5. Which change in iodine is endothermic?
3) I2 (l) ------------> I2(s)
1) I2(g) --------------> I2(s)
2) I2(s) ---------------> I2(g) 4) I2(g) -------------> I2(l)
6. Which phase change correctly shows the release of heat to the surrounding?
1) NH3 (l) -----------> NH3 (g) 3) NaCl(s)) ----------> NaCl(l)
2) CO2 (s) ----------> CO 2(g) 4) H2O (g) -----------> H2O(l) Need Help? Study Book Pg 9 – 10 Set 13 - 15
o
7. Which equation shows a phase change of water at 0 C
1) H2O (l) -------------> H2O (g)
3) H2O (s) -------------> H2O (aq)
2) H2O (l) -------------> H2O (s) 4) H2O (s) --------------> H2O (g)
8. Which equation correctly shows liquid/steam equilibrium of water at its boiling point?
1) H2O (l) ------------> H2O (g) 3) H2O (s) ---------> H2O(l)
2) H2O (l) ------------> H2O (s) 4) H2O (s) -----------> H2O (g)
9. The change NH3(g) -------- > NH3(l) is best described as
1) Evaporation, and is exothermic 3) Condensation, and is exothermic
2) Evaporation, and is endothermic 4) Condensation, and is endothermic
10. A change of Iodine solid to iodine gas is best described as
1) Sublimation, in which heat is absorbed 3) Evaporation, in which heat is absorbed
2) Sublimation, in which heat is released 4) Evaporation, in which heat is released
124 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
