Science Flashcards
What is the law of conservational energy?
The law of conservational energy states that energy cannot e create or destroyed only transferred.
What is the symbol for hydrochloric acid?
HCL
What is the symbol for calcium carbonate/limestone
CACO3
What is a factor that affects the rates of reaction
Temperature: gives particles more kinetic energy so that they can collide more frequently and forcefully meaning more particles can overcome the activation energy
How does a chemical reaction happen?
In order for the particles to react they must collide
What is activation energy?
the minimum amount of energy needed to break the bonds for a reaction to occur.
What are reactants
Chemicals you use to make a product
What are products?
Chemicals you end up with
True or False?: creating new bonds releases energy
True
True or False?: breaking bonds takes in energy?
True
What is -delta H?
-Delta H is the overall energy in a exothermic reaction which means energy exits
What is +Delta H?
+Delta H is the overall energy i an endothermic reaction meaning energy enters
What is an exothermic reaction?
It is a chemical reaction that feels warm or hot to the touch
What is an endothermic reaction?
It is a chemical reaction that feels cold to the touch
What is the unit of measurement for energy?
Joules (j) kilojoules (kj)
