Answer 1:
Energy that comes from the internal motion of atoms and molecules is called chemical energy
Explanation:
When atoms inside an object vibrate or they move then give up their energy. This energy is given as the chemical energy. Chemical energy is energy stored in the bonds of atoms and molecules. When these atoms or molecules move they are said to be ions as well and when their bonds break they are dissociated in their respective ions.
Answer 2:
In any energy conversion, some of the energy is lost to the environment as thermal energy
Explanation:
Thermal energy is the energy produced from heat. For example the burning of fossil fuels in the environment produces heat ot thermal energy as well. Similarly the burning of gasoline inside automobiles engines also produce heat energy. So we can say that In any energy conversion, some of the energy is lost to the environment as heat or thermal energy.
Answer 3:
The correct options are
- Cold water sinking in a pot of water being warmed up on the stove
- Feeling a metal wire get warmer as you roast a marshmallow over a fire.
Explanation:
The scenario given above is the phenomenon of convection which is defined as the process in which heat i transferred from one object to another object by direct contact of those two objects. So if we see the question we are given with convection process hence a metal wire get warmer as we roast a marshmallow over a fire. Or cold water sinking in a pot of water being warmed up on the stove.
