Across
- 5. the smallest unit of an element
- 6. a simple sugar that is an important energy source in living organisms and is a component of many carbohydrates
- 8. a microorganism living in water that consists of a single cell that produces its own food through photosynthesis
- 9. a multicellular organism that lives in water and produces its own food through photosynthesis
- 10. a pure substance that cannot be broken down into simpler substances by chemical reactions
- 11. substances formed as a result of a chemical reaction
- 13. a chemical change
- 14. the process of changing or causing something to change from one form to another
Down
- 1. a dramatic change in form or appearance
- 2. a substance that provides nourishment for growth and maintenance of life
- 3. an organism that you can only see with a magnifying glass
- 4. the chemical process in plants that use water, sunlight, and carbon dioxide to produce oxygen and sugar
- 7. two or more atoms joined together
- 12. substances that are consumed to create a chemical reaction