a change in temperature, and the formation of a precipitate are all evidence of a chemical reaction. NGSS 5-PS1-4: Conduct an investigation to determine whether the mixing of two or more substances ...

Instead, the atoms rearrange themselves to form new chemicals. This is known as a chemical change. The other kind of change in chemistry is a physical change, which is when a substance changes ...

Students will be able to make measurements showing that whether the process is a change of state, dissolving, or a chemical ... total mass of the substance and the liquid it dissolves in does not ...