Endothermic reactions will always drop in temperature

A reaction starts with less energy than what it ends with.

In an exothermic reaction the system gains energy in the form of heat

Endothermic reactions absorb energy from the surroundings

The change in temperature is a chemical property.

Energy is not given off to the environment

Which of the following is not a type of energy?

What is chemical energy?

What is heat?

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 is the definition of enthalpy?

Considering the following equation, how much energy would be released if 50.0g of water were reacted?2NH3 + 4H2O 2NO2 + 7H2 ∆H= -142.5 kJ

Consider the following equation, how much energy would be released if 10.0g of C2H5OH were burned?C2H5OH + 3O2 2CO2 + 3H2O ∆H= -1234.7 kJ

A 50-gram piece of silver is dropped into a container of water. As it cools, the silver gives off 200 calories of heat. What is the silver’s temperature change? (The specific heat capacity of silver is 0.056 cal/g°C).

A 20-gram piece of copper is dropped into a container of water. As it cools, the water changes from 40 °C to 60 °C. How much heat did the copper give off? (The specific heat capacity of copper is 0.092 cal/g°C).

A piece of sugar free gum is burned in a bomb calorimeter containing 500 g of water. The temperature of the water increases from 25 ºC to 35 ºC. How many calories did the sugar free gum have?

A piece of sugar free gum is burned in a bomb calorimeter containing 500 g of water. The temperature of the water increases from 25 ºC to 35 ºC. How many Calories did the sugar free gum have?

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