chemistry

2. change from a solid to a liquid
5. able to be drawn into thin wires
7. anything that has mass and takes up space
8. number of protons in an element
9. way of writing the name of a compound using chemical symbols
11. the way a material reflects light
12. smallest part of an element that can be identified as that element
13. particle that has a positive charge - located in the nucleus of an atom. You can figure out the number of protons by looking at the atomic number of an element.
15. state of matter that has no definite shape or volume
16. change from a gas to a liquid
17. state of matter with a definite shape and volume
18. change from a liquid to a solid
19. state of matter with a definite volume but no definite shape

1. change from a solid directly to a gas
3. process in which new substances with new chemical and physical properties are formed
4. elements that make up Group 17 in the periodic table
6. change from a liquid to a gas at the surface of the liquid
9. force of attraction that holds atoms together
10. ions with a negative charge
14. element that lacks most of the properties of a metal, is not shiny, does not conduct electricity or heat well, is not malleable so it is called brittle or breakable.