Level 1
What is the definition of thermal energy?
Energy that can be transferred from one object to another in the form of heat
A + B -> AB is the structure for which type of reaction?
Synthesis Reaction
During the formation of water (H2O), the temperature of the surroundings increase. Is this reaction endothermic or exothermic?
Exothermic
Predict the products for the following synthesis reaction: Na + Cl -> ????
NaCl
Energy that is stored in bonds of molecules and is released or absorbed when a chemical reaction takes place.
A + BC -> AC + B is the structure for which type of reaction?
Single Replacement Reaction
energy + NH4Cl + H2O ⟶ NH4Cl is an example of an endothermic or exothermic reaction?
Endothermic
Predict the products for the following combustion reaction: CH4 + O2 -> ??? + ???
H2O + CO2
What is the definition of endothermic reactions?
A reaction where energy is absorbed in the reaction and there is a decrease in temperature of the surroundings
CH4 + O2 -> H2O + CO2 is an example of what type of reaction?
Combustion Reaction
In what kind of process does the reaction gain energy while the surroundings lose energy?
Endothermic
Predict the products for this single replacement reaction: Cl2 + 2NaBr → ??? + ???
2NaCl + Br2
What is the definition of exothermic reactions?
A reaction where energy is released in the reaction and there is an increase in temperature of the surroundings
AgNO3 + NaCl → AgCl + NaNO3 is an example of what type of reaction?
Double Replacement Reaction
What type of reaction is represented by the following temperature change:
Temp before reaction: 15 degrees Celsius
Temp after reaction: 10 degrees Celsius
Endothermic Reaction
Predict the products for the following double replacement reaction: AgNO3 + NaCl → ???? + ????
AgCl + NaNO3