Final answer:
Conduction is the transfer of energy by direct contact. A chemical reaction system refers to the reactants and products in a reaction. Other plants would be considered the surroundings in photosynthesis. If the products have more energy than the reactants, an endothermic reaction has occurred. A fireworks show involves an exothermic reaction.
Step-by-step explanation:
In conduction, energy is transferred by direct contact. This happens when atoms or molecules pass on their energy by colliding with others nearby. For example, when the handle of a metal spoon heats up as you stir a cup of hot coffee, conduction is taking place.
A chemical reaction system refers to the reactants and products in a reaction. It is the specific part of matter being studied during an experiment or observation.
In photosynthesis, other plants would be considered the surroundings, as they are not part of the system. The system refers to the specific plant undergoing photosynthesis.
If the products of a reaction have more energy than the reactants, an endothermic reaction has occurred. Endothermic reactions absorb energy from the surroundings, causing the products to have a higher energy level.
During a fireworks show, an exothermic reaction is occurring. Fireworks are bright, indicating a release of light energy. In an exothermic reaction, energy is released into the surroundings.