chemistry

3. bond between non metal and non metal
8. technique that use a porous barrier to separate a solid from a liquid
12. building blocks of everything
14. Characteristic of a substance that can be observed or measured without changing the substance.
15. study of the composition and components.
18. study of life
19. effect of gravity on a mass
20. study of motion and forces
23. amount of space
24. technique that separates the components of a mixture on the basis of the tendency of each to travel or be drawn across the surface of another material
25. anything without carbon
28. SI Unit for time
29. error / accepted value times 100
32. study of the composition of matter
35. number of protons
36. group 17
37. study of matter and processes of living organisms
38. contains carbon
40. sudy of earth and the rocks that make it up

1. a law that states that matter cannot be destroyed or created
2. Group 3 - 12
4. Group 1
5. charge of a proton
6. bond between metal and metal
7. outer energy
9. a type of change that changes the identity of the substance
10. changes where properties of the material change but the identity doesn’t
11. the force that holds two atoms together
13. group 2
16. group 18
17. mass divided by volume
21. charge of an electron
22. can be seen and measured directly
26. bond between metal and non-metal
27. technique that results in the formation of pure solid particles of a substance from a solution containing the dissolved substance.
30. number of protons and neutrons
31. SI Unit for length
33. technique that is based on differences in the boiling points of the substances involved
34. anything that has mass and takes up space
39. a positively charged ion