energyfinalrevkey

# energyfinalrevkey - Name_Key 2nd Semester Final Review...

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Name ___________ Key ________________ Period _________ 2nd Semester Final Review - Thermochemistry 1. Make the following conversions: 850 calories = . 850 Calories 440 cal = 1800 joules 1.8 KJ = 1800 joules 0.45 kJ = 108 cal 35 Cal = 3500 cal 25 kcal = 104.5 kJ 2. Define the following terms: exothermic - releases heat to surroundings, heat is a product in the chemical reaction endothermic -absorbs heat from the surroundings, heat is a reactant in a chemical reaction specific heat capacity the amount of heat required to raise the temp of 1g of a substance 1 ˚C Activation energy -the energy required to form the activated complex Catalyst - a substance that speeds up the rate of a chemical reaction without itself being used up. 3. What is the specific heat capacity of liquid water in terms of calories and joules? 1 cal/g˚C or 4.18 J/g˚C 4. How many kJ of heat is absorbed when 1.00 L of water is heated from 18 o C to 85 o C? 280 kJ

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energyfinalrevkey - Name_Key 2nd Semester Final Review...

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