Vocabulary

3. Reaction a process that changes substances into a new substances
5. a dramatic change in form or appearance
6. the process of changing or causing something to change from one form to another
11. an organism that can be seen only with aid of microscope end that typically consists of only a single cell
12. a multicellular organism that lives in water and produces its own food through photosynthesis
13. a pure substance that cannot be broken down into simpler substances by chemical reactions
14. substances that are consumed to create a chemical reaction

1. a single sugar that is an important energy source in living organisms and is a component of many carbohydrates
2. the chemical process in plants that use water, sunlight, and carbon dioxide to produce oxygen and sugar
4. the small unit of an element that has the properties of that element
7. a substance that provides nourishment for growth and maintenance of life
8. a microorganism living in water that consists of a single cell that produces its own food through photosynthesis
9. two or more atoms joined together
10. substances formed as a result of a chemical reaction