chemistry crossword

2. substance-substance made of only one kind of matter
4. number-number of protons in the nucleus of one atom of an element
5. combination of pure substances: unlike a compound, the component of a mixture do not combine chemically and are not always in the same ratio
8. change-change in the appearance or sate of a substance that does not change the composition
9. charged particle in the nucleus of an atom
11. mixture in which tiny particles of one substance are held within another, and the particles can be separated out
12. invisible negatively charged particle that orbits the nucleus of an atom
14. a pure substance that cannot be broken down into other substance
15. mixture-heterogeneous mixture: mixture in which the different substances that make up the mixture are visible
16. of state from solid to a gas or from a gas to solid
18. of state from gas to a liquid
19. combination of two or more elements in a specific ratio
20. or become liquefied by heat.
21. smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
22. process of turning from liquid into vapor.
23. mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance

1. table- a table in which the elements are organized by their physical and chemical properties
3. change- change that results when two or more substance react to create a different substance or substances
6. anything that has mass and occupies space
7. particle in the nucleus of an atom
10. mixture;mixture of two or more pure substances that look like one substance
13. that collects as droplets on a cold surface when humid air is in contact with it
17. shell- orbit of electrons around the nucleus of an atom