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1. 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

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. Which statement is FALSE?
extensive properties depend directly on the amount of substance temperature is an extensive property intensive properties do not depend on the amount of substance mass is an extensive property all statements are true

4. Work is defined as:
force over distance energy over time money over time speed over distance none of the above

5. Heat capacity (C) is:
heat absorbed / increase in temperature heat absorbed / mass of substance increase in temperature / heat absorbed mass of substance / heat absorbed none of the above

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