Students explore the concept that chemical reactions involve the breaking of bonds between atoms in the reactants, and the rearrangement and rebonding of these atoms to make the products. Students ...

The speed of a chemical reaction is affected ... It can be calculated by measuring changes in reactants/products. Atomic structure Atoms are made from protons, neutrons and electrons.

Looking at some common but simple chemical reactions is a good way to encourage students to think about what ... [INSERT CHEM_CI_11_ima] These reactions should provide opportunities to encourage ...

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.

When physical change occurs substances change their state ... Here chemical bonds are broken between the hydrogen atoms in the molecules of hydrogen gas. Similarly between oxygen atoms. Then new ...

and 6 oxygen atoms The chemical equation is balanced because the same type and number of atoms are in the reactants and products. Lesson 6.2: Controlling the Amount of Products in a Chemical Reaction ...