Is it true that during chemical changes atoms are rearranged and different kind of matter form?

Answer 1

Yes, in chemical reactions the fundamental structure of the molecules (i.e., the arrangement of the atoms) changes. This differs from a physical reaction, in that in a physical reaction, only superficial traits of the substance change. A good rule of thumb for determining whether something is a physical or chemical reaction is that physical reactions are easily reversible (e.g., freezing/melting water), while a chemical reaction is not really reversible (e.g., cooking/uncooking a steak).

Answer 2

Yes, chemical changes cause atoms to be rearranged by adding or removing elements from compounds, or both adding and removing.

*Another type of atomic rearrangement, called allotropes, are not the result of chemical changes, but of structural changes within an element's molecules (e.g. carbon as graphite or as diamond).

Answer 3

No, matter cannot be created or destroyed.

Answer 4

Yes and No. The atoms themselves do not rearrange but during a chemical change different atoms come together to make new COMPOUNDS by exchanging or sharing electrons.