Unit 4 Vocab

3. anything that has mass and takes up space
5. Which element makes up most of the mass of the human body?
8. is the smallest unit of a substance that maintains the properties of that substance
12. Substances that contain only one type of atom
14. During a _____ _____, atoms are
16. where photosynthesis takes place
17. the smallest unit of living things
20. is an organism that gets energy and matter by eating other organisms
21. A substance made of atoms of two or more different elements
22. is the ability to cause change

1. is a series of chemical reactions in which the cells of producers use energy from the sun to make carbon-based food molecules, known as sugars or glucose
2. is a process that uses oxygen to release the energy stored in food molecules
4. occurs when the eroded materials are dropped, or laid down
6. The starting substances in a chemical reaction
7. The substances formed in a chemical reaction
9. is made up of two or more atoms held together by chemical bonds
10. Fragments of weathered rock
11. is the process by which rock materials are broken down by the action of physical and chemical processes.
13. into new substances
15. is the process by which wind, water, ice, or gravity transport weathered materials from one location to another
18. is an organism that gets energy and matter by breaking down the remains of other organisms that have died
19. is an organism that uses energy and matter from the environment to make its own food molecules