Across
- 3. combinations of two or more different elements
- 5. a well-tested and widely accepted description of observations that have been repeated many times
- 6. anything that has mass and takes up space
- 8. an atom with a positive or negative charge
- 9. compound that is carbon-based
- 10. change where it is changing its characteristics and states
- 14. important and certain results of science and is based on a large body of evidence
- 15. element with the same atomic number but different atomic mass
- 17. practices to advance knowledge and understanding of how the natural world works
- 21. law of thermodynamics in which the quality of energy declines as it changes states
- 22. matter with a unique set of properties that cannot be broken down into simpler forms
- 24. set of components that function and interact in some regular way
- 25. law of thermodynamics where energy is neither created nor destroyed when changing states
Down
- 1. physical or mathematical representation of a structure or system
- 2. when a system is stuck in a positive feedback loop
- 4. information
- 7. capacity to do work
- 11. basic building block of matter
- 12. scientists reviewing each others work
- 13. energy that is stored and possibly available for use
- 16. energy where matter is moving
- 18. possible an d testable answer to a scientific question
- 19. change where matter is changing its composition
- 20. output of matter/energy is fed back into the system as input and leads to changes
- 23. energy that can be considered kinetic, deals with heat