Chemistry

2. stable subatomic particle that has a positive charge
4. a silvery-white metal, the chemical element of atomic number 28
5. a metal is an element that readily forms positive ions and has metallic bonds
6. a strong hard magnetic silvery-gray metal the chemical element of atomic number 26
8. an element or substance that is not a metal.
9. a solid material that is typically hard shiny malleable fusible and ductile with good electrical and thermal conductivity
12. an upright pillar typically cylindrical
14. a colorless odorless reactive gas the chemical element of atomic number 8 the life-supporting component of the air
17. of a metal or other material able to be hammered or pressed permanently out of shape without breaking or cracking
18. table, a table of the chemical elements arranged in order of atomic number
19. a colorless odorless highly flammable gas the chemical element of atomic number 1
20. the chemical element of atomic number 16, a yellow combustible nonmetal

1. the degree to which a specified material conducts electricity
3. a subatomic particle of about the same mass as a proton but without an electric charge
7. mass, the mass of an atom of a chemical element expressed in atomic mass units.
10. a number of people or things in a more or less straight line
11. a stable subatomic particle with a charge of negative electricity
13. a coherent typically large body of matter with no definite shape
15. a substance that can not be broken down
16. the chemical element of atomic number 11 a soft silver-white reactive metal