The answer is the atoms of the reactants have combined to form a new substance. Every product of a chemical equation has to be a new substance. If their is no new substance then, a chemical change never occurred and there is no chemical equation. The new substance never has the same properties as the reactants. That's why they call it a "new" substance. Also, the atoms are the ones that combine. They are not mixed
Answer:
The Miller Urey experiment provide the first evidence that organic molecules needed for life could be formed from components.
Explanation:
The part of the brain where planning, language and advanced thought occur is the cortex.
It is the largest part of a human brain, the cerebrum or the cortex. Connected with higher brain function such as thought and action. The cortex also protects the cerebellum.
Explanation:
cell memebrane
all animal posess cell memebrane while all plant posess cell wall
