15 questions
Which of the following is NOT a factor affecting reaction rate?
temperature
catalysts
concentration
polarity
In an exothermic reaction, heat is ...
absorbed
released
In an endothermic reaction, heat is ,,,
absorbed
released
Do the reactants in an exothermic reaction have a higher or lower energy than the products?
Higher
Lower
Do reactants in an endothermic reaction have a higher or lower energy than the products?
Higher
Lower
What is activation energy?
The maximum amount of energy used
The minimum amount of energy required for a reaction to start
The energy of the reactants
The energy possessed by the products
Which state of matter will react the SLOWEST?
solid
liquid
gas
the all react at the same rate
The potential energy of the reactants is..?
100 kJ
250 kJ
50 kJ
200 kJ
What is the potential energy of the products?
100 kJ
250 kJ
50 kJ
200 kJ
What is the activation energy?
100 kJ
250 kJ
50 kJ
200 kJ
What is the overall change in energy (ΔH)?
100 kJ
250 kJ
50 kJ
200 kJ
Is this an endothermic or exothermic reaction?
endothermic
exothermic