Many students have difficulty perceiving a chemical reaction as a dynamic process. This is sometimes not helped by the way in which they learn about these changes. Often they are presented with ...

Students explore the concept that chemical reactions involve the breaking of bonds between ... Students investigate reactions which produce a gas, form a precipitate, and cause a color change.

Looking at some common but simple chemical reactions is a good way to encourage students to think about what might be going on at a molecular level. Choosing reactions where clear observations can be ...

They began to study areas such as: How living things get energy from food The chemical basis of heredity What fundamental changes occur in disease Biochemistry includes the sciences of molecular ...

Atoms are rearranged during a chemical reaction, but the number of atoms does not change. Evidence of chemical reactions includes a large temperature change, bubbles, or a colour change.