What is a chemical bond?
What happens when substances react?
What are covalent bonds?
What do metal atoms share in a metallic bond?
When do ionic bonds form?
Why does chlorine atom take an electron from the sodium?
Why do the sodium and chlorine ions stick together?
Why is digesting food an example of a chemical reaction?
How are reactants and products different?
Why is it a chemical reaction when water forms from two hydrogen molecules and one oxygen molecule?
What is different about the three kinds of chemical bonds?
The last column of the periodic table has elements that have outer shells that are full of electrons. They are not very reactive. Why do you think they are not very reactive? (Think about ionic bonds.)