science and Scientists. Matter and Energy

4. capacity to do work or transfer heat.
5. An approximate representation or simulation of a system being studied.
6. interaction between chemicals in which the chemical composition of the elements or compounds involved changes.
8. a possible & testable explanation of what they observe in nature or in the results of an experiment.
10. particle of an atom that has a positive charge.
14. particle of an atom that has no electrical charge.
15. is a well-tested and widely accepted description of what we find happening over and over in the same way in nature.
16. combination of two or more different elements held together in fixed proportions.
18. particle of an atom that has a negative charge.

1. this law states that whenever matter undergoes a physical or chemical change, no atoms are created or destroyed.
2. moving energy.
3. is a fundamental substance that has a unique set of properties and cannot be broken down into simpler substances.
7. process that alters one or more physical properties of an element or a compound without changing its chemical composition.
9. Energy that is stored and potentially available for use.
11. is an attempt to discover how nature works and to use that knowledge to make predictions about what is likely happen in nature.
12. information such as observations and measurements needed to answer a question
13. Anything that takes up space and has mass
17. basic building block of matter.