A student made the following table describing matter and non-matter. Why is the table incorrect? Matter Non-matter Takes up space Does not have a volume Example: wood Does not take up space Does not have a mass Example: heat energy Matter has a volume. Non-matter takes up space. Non-matter has a mass. Wood is an example of non-matter.

the answer is c. nacl

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.