Answer:
oranges: contains chemical
heat: neither
sunlight: neither
photosynthesis: chemical reaction
bleaching protein: contains chemical
neutralization: chemical reaction
combustion: chemical reaction
vitamin K: contains chemical
rainbow: neither
marble: contains chemical
Explanation:
A chemical is a substance that is used in or made by chemical reactions. It is a matter with compositions related to the science of chemistry. In the question,
- orange contains chemical like vitamins, protein molecules etc.
- Bleaching protein contains chemicals that bring about the bleaching process.
- Vitamin k contains chemical elements
- marble contains Calcium, oxygen etc elements
A chemical reaction is that which involves the change in chemical properties of involved substances.
- Photosynthesis is the chemical reaction between carbon dioxide and water in the presence of sunlight to give glucose.
- Neutralization is the chemical reaction where an acid neutralizes a base to form a salt and water molecule.
- Combustion is the chemical reaction involving the burning of a chemical substance.
Some substances like sunlight, heat and rainbow are neither a chemical or chemical reaction.
