Science Vocab

6. an organism that feeds on other organisms
7. energy of motion
8. chemical formuals and symbols written to represent a reaction
9. anything that has volume and mass
12. positively charged particle in an atom
13. the average energy of the particles in something
14. a number placed in front of a chemical symbol to balance a chemical equation
15. a substance produced during a chemical reaction
17. smallest particle of matter
18. energy transferred between two objects of different temperatures
19. distinct forms of matter; solid, liquid, gas
20. an organism that makes its own food
22. negatively charged particle in an atom
23. state of matter when atoms flow and have a definite volume but no definite shape
24. particle in an atom with no charge
26. simplest unit of a chemical compound, formed when two or more atoms bond together
29. a measure of how much matter is in something
31. nonliving things in an ecosystem
32. characteristics that can only be observed during a chemical change
33. state of matter when atoms spread out freely and have no definite shape or volume
34. all living things in an ecosystem

1. a single substance with definite composition and properties
2. when substances interact to form new substances
3. resources that can be replaced by natural processes within a lifetime
4. the total energy of the particles in something
5. characteristics that can be observed without changing the substance
10. organisms fighting to get the same resource
11. a substance that takes part in and undergoes change during a reaction
16. resources resources that are limited and cannot be replaced in lifetime
21. building blocks of all matter; made up of one type of atom
22. all of the biotic and abiotic factors in an area, and the interactions among them
25. state of matter when atoms are packed closely together
27. to prevent the loss of something
28. all the members of one species living in a certain area
30. states that matter cannot be created nor destroyed