Elements Crossword

2. Contained in farts
4. This family contains flourine, chlorine, bromine, iodine, astatine
5. Has 26 protons
9. A horizontal row of elements in the Periodic Table
10. A table that organizes all known elements by their properties
11. Has golden tinge and violent reaction to water
12. Most expensive natural metal
15. When combined with hydrogen makes water and is what we breathe
17. An element whose properties are mixed between metals and nonmetals (hint: not metalloid)
19. Is part of every living thing
20. A group of elements that is usually hard, shiny, malleable, and ductile

1. A law that states that when elements are arranged by atomic number they show a periodic variation of their properties
3. A silvery white metal use to make salt
6. A particle inside the nucleus that has a neutral charge
7. A negatively-charged particle that orbits the nucleus
8. Mostly on the right side of the table and not malleable or ductile
13. One of the two or more forms of an element.
14. First name of the inventor of the periodic table
16. Makes up almost 80% of Earth's air and essential to plant life
18. A vertical column of elements in the Periodic Table