Chemistry Homework Choice Board

3. a substance that only contains one type of atom or one type of molecule
5. a substance that only has one atom
6. a mixture that has different properties in different regions of the mixture
7. a usually reversible change, such as change in size or shape
10. visible to the naked eye
15. a method for seperating the components of a mixture containing a solid (doesn't dissolved in a liquid)
17. a method for serperating the components of a liquid mixture that depend on different boiling points of it
18. collection of atoms bonded together as a unit
19. a substance that can be seperated by physical means such as filtration
20. a property of matter that changes as the amount of matter changes
21. one of the three states of matter (molecules really close together and compact)
22. a homogenous mixture
24. explanation of data, based off of observations
26. study of matter, energy, reactions
27. one of the three states of matter (molecules really spread apart)

1. characteristics of substance that can change with out the substance a changing into a different substance
2. a mixture that looks the same throughout
4. anything that takes up space and has mass
8. the change of substances into other substances through the reorganization of atoms
9. one of the three states of matter (molecules kind of spread apart but still compact0
11. substances that has more than one atom
12. controlled process of answering a question with an expirement
13. characteristics that describes the ability of a substance to change into a different substance
14. a property of matter that does not change as the amount of matter changes.
16. a mixture of elements that has metallic properties
19. not visible to the naked eye
23. Law phenomena in the universe than can be proven - math related
25. units that elements are composed of