Question

1. what kind of reaction is photosynthesis an example of?
2. name 5 places where carbon is found:
3. thermal energy moves from a to a body.
4. if an ion gains an electron, it is.
5. if an ion loses electrons, it is.
6. an organism eating food and breaking it down is an example of energy.
7. an organism running around the forest is an example of energy.

Explanation:

1. Photosynthesis is an endothermic reaction as it absorbs energy (sunlight) to convert carbon dioxide and water into glucose and oxygen.
2. Carbon is found in the atmosphere (as \(CO_2\)), in fossil fuels (like coal, oil), in living organisms (as organic compounds), in limestone (\(CaCO_3\)), and in the ocean (dissolved \(CO_2\) and carbonates).
3. According to the second law of thermodynamics, thermal energy moves from a hotter body to a colder body.
4. When an ion gains an electron, it is reduced (reduction is the gain of electrons).
5. When an ion loses electrons, it is oxidized (oxidation is the loss of electrons).
6. An organism eating food and breaking it down is an example of chemical energy (the energy stored in the chemical bonds of food molecules).
7. An organism running around the forest is an example of kinetic energy (energy of motion).

Answer:

1. Endothermic reaction
2. Atmosphere, fossil fuels, living organisms, limestone, ocean
3. hotter body; colder
4. reduced
5. oxidized
6. chemical
7. kinetic