Endothermic reactions always raise in temperature

A reaction does not start with less energy than it in ends with

In an exothermic reaction, the system loses energy in the form of heat

Endothermic reactions lose energy to the surroundings

Change in temperature is not a chemical property

Energy is given off to the environment

Which of the following is not a type of energy?

What is chemical energy?

What is heat Energy?

What happens to energy when things happen?

Which of the following is not a way energy is transferred?

What sign does ∆H have in exothermic reactions?

What sign does ∆H have in endothermic reactions?

What is the definition of enthalpy?

Given the following thermochemical equation: 2NH3 + 4H2O 2NO2 + 7H2 ΔH= -142.5 kJ/mol, how much heat is released from the reaction of 20 g of H2O?

16. 25.0 g of mercury is heated from 25°C to 155°C, and absorbs 455 joules of heat in the process. Calculate the specific heat capacity of mercury.

A 0.3 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66,300 J. If the specific heat of copper is 390 J/g 0C, what is the change of the copper's temperature?

18. What mass of water will change its temperature by 3 0C when 525 J of heat is added to it? The specific heat of water is 4.18 J/g 0C

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