Answer:
Explanation:
The law of conservation of energy states that energy is neither created or destroyed but transformed from one form to another for example radio transmitter convert electrical energy to sound energy, water from one height to a lower height convert gravitational potential energy to kinetic energy.
Answer:
d). A catalyst lowers the activation energy for a chemical reaction.
Explanation:
From the given choices, it is true that a catalyst lowers the activation energy for a chemical reaction.
The activation energy is the energy barrier that must be overcome before a chemical reaction can occur.
Some reactions have very high activation energy and would not occur without the introduction of a catalyst.
The catalyst brings the reactants into contact by removing the energy deficiency in the system.
Answer:
Explanation:
All the gases at the same temperature and mass have the same average kinetic energy.
If the masses were different, then the different gases will have different velocities. If the temperature was higher then there would be a greater motion, if the temperature was lower, then there would be less motion.
answer: dispersed from the liquid so cold air can take its place
