Answer:
The right answer is A. Matter is preserved throughout the combustion of wood.
Explanation:
A key principle regarding matter suggests that the mass prior to a reaction equals the mass afterward.
According to Joan's experiment, she found that the quantity of carbon atoms stays at 840 during the combustion process. The count of carbon atoms present in the wood initially matches the amount present in carbon dioxide once combustion completes. This illustrates that Joan's model endorses the conservation of matter principle during wood burning.
When warm, moist air comes into contact with colder, drier air, the warm air ascends, causing the water vapour to condense and form clouds. This process leads to the release of heat, which is a form of energy.