Exothermic and endothermic reactions Flashcards
What happens during chemical reactions
Thermal energy is taken into or given out to the surroundings
What happens during an exothermic reaction
Energy is given out to the surroundings, and the temperature of the surroundings increases
What are some examples of exothermic reactions?
Combustion and neutralization
What happens in endothermic reactions
Energy is taken in from the surroundings, and the temperature of the surroundings decreases
In what would the reaction be carried out in order to measure the temperature change
A polystyrene cup with a lid on
How would we know what type of reaction occurs when measuring temperature changes
If the temperature increases, it is exothermic and if it decreases it is endothermic
Why do we stand the polystyrene cup inside of a beaker
To stop it falling over
Why do we use a lid on the polystyrene cup
To prevent heat loss
What is measured in the experiment
The temperature of the initial and final reaction mixture is taken using a thermometer
