HELPPP , Identify two acids and two bases that you use or
come into contact with in an average week.
Identify uses for each substance.

2 acids:

Vinegar - used for cleaning, cooking

Lemon juice - used in cooking

2 bases

Bleach - used for disinfecting and cleaning

Baking soda - used as a leavening agent

Examples of common acids include vinegar, lemon juice, and soda.

Examples of common bases include ammonia, bleach, and antacids.

Common uses of acids include flavoring and preserving foods, and they are found in cleaning products.

Common uses of bases include neutralizing acids, and they are found in cleaning products.

Explanation:

The elements heavier than hydrogen and helium were produced inside stars.
During most of a star's lifetime, hydrogen nuclei fuse together to form helium nuclei.As the star runs out of hydrogen, other elements. Heavier elements than hydrogen and helium are form. Elements heavier than iron are formed in supernovas.