2. In an exothermic reaction
heat flows into the system heat flows into the surrounding heat flows into both the surrounding and system no heat is involved none of the above
3. When a wheel rolls on a surface, the energy transferred by the tires to the surface is called:
fictional heating potential energy kinetic energy carpet burn pathway
4. Which statement is TRUE?
calorimetry is the science of measuring heat molar heat capacity is the energy required to raise the temperature of one mole of substance by one kelvin specific heat capacity is the energy required to raise the temperature of one mole of substance one degree °C calorimetry experiments do not have to be performed at a constant volume all statements are false
5. After substance A was added to a beaker of water, the water temperature decreased. Which statement explains this phenomenon?
this process was exothermic and required hear from water substance was endothermic and required heat from water substance A caused the water to boil the water molecules moved faster none of the above
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