A change in temperature, formation of bubbles, precipitate forms, color change, change in smell, difficult to reverse are all signs of ?
Chemical Reaction
In an exothermic reaction, energy is ...
Released / Given out (by the system to the surroundings)
In an endothermic reaction, energy is ...
Absorbed / Taken in (by the system from the surroundings)
If a chemical reaction is EXOTHERMIC, the temperature would....
increase
Do REACTANTS in an Endothermic Reaction have a higher or lower energy than the products?
lower
Do the REACTANTS in an Exothermic Reaction have a higher or lower energy than the products?
Higher
An endothermic reaction is occurring in a beaker. We are part of the surroundings and touched the beaker, so it would feel _______.
Cooler
Is photosynthesis an Exothermic or an Endothermic reaction?
Endothermic (light energy is absorbed)
What type of reaction is portrayed in this energy diagram? Where there is MORE energy in the products, and LESS energy in the reactants.
Endothermic Reaction
What type of reaction is portrayed in this energy diagram? Where there is MORE energy in the reactants, and LESS energy in the products.
Exothermic Reaction
ENDOTHERMIC OR EXOTHERMIC: You freeze juice to make ice pops.
Exothermic
ENDOTHERMIC OR EXOTHERMIC: Ice cubes in your glass of soda melt.
Endothermic
ENDOTHERMIC OR EXOTHERMIC: Neutralization reaction (acid + base)
Exothermic
ENDOTHERMIC OR EXOTHERMIC: Cooking steak.
Endothermic
Define Reaction Rate
A measure of change in the amount of reactants consumed (or products produced) per unit time
What apparatus do we use to measure the gas volume?
Gas syringe
