chemical

5. The Symbol of oxygen is 'O' and the formula for oxygen is 'O2'.
6. an important heat-trapping gas, also known as a greenhouse gas
10. a type of sugar you get from foods you eat, and your body uses it for energy.
13. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
16. substance that takes part in and undergoes change during a reaction.
19. a metabolic pathway that uses glucose to produce adenosine triphosphate (ATP)
21. physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.the structure and properties of matter"
22. energy that comes from a source and travels through space at the speed of light
23. no matter can ever be created or destroyed
24. proteins that help speed up metabolism, or the chemical reactions in our bodies

1. chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances
2. the physical energy resulting from electromagnetic radiation, usually observed as it radiates from a source into the surrounding environment.
3. the name of the green pigment that plants use to make food during a process called photosynthesis
4. the order of events in an ecosystem, where one living organism eats another organism,
7. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
8. made up of building blocks called amino acids
9. the movement of matter between the Earth, the atmosphere, and living thingsautotroph
11. chemical element with symbol C and atomic number 6.
12. the action of breathing
14. an organelle within the cells of plants and certain algae that is the site of photosynthesis
15. sugar molecules.
17. an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
18. the source of energy for use and storage at the cellular level
20. an article or substance that is manufactured or refined for sale.