Chemistry Facts Review

3. group 1 metals which are the most reactive.
5. element which is the lightest stable gas on earth, good for blimps.
6. elements which are not shiny and generally are gaseous.
7. very reactive alkali metal which can form table salt, but is essential for maintaining internal blood balance.
8. element which can be used for pyrotechnics and is also important for forming the rigidity to the bones besides calcium.
11. each one of these has their own unique atoms.
14. element found in sand that can be superheated into glass.
15. important stable gas used for lighting and in tanning beds.
16. halogen in its pure state can be used as a chemical weapon in warfare.
18. an element which behaves both as a metal or a non metal.
19. the group 8 elements are referred to as these kind of gases because they don't (play) react.
20. an important halogen because it can form salt products that aid in our oral health.
21. electrons in the outermost energy level.
23. important stable gas for night lights and shop signs.

1. All the elements in a line going down the table.
2. group 2 metals which are reactive when heat is added.
4. element which is reactive and is main metal in most common batteries.
5. salt forming group of elements.
8. elements which are shiny and good conductors of electricity.
9. the most abundant gas in earth's atmosphere, also bonds with other elements to form unique molecules such as ammonia.
10. important element in the atmosphere because it reacts to form necessary molecules for life, such as water and ozone.
12. the number of valence electrons for atoms to be stable except for hydrogen and helium.
13. All the elements in a line going across the table.
17. element which is most abundant in the universe, makes up the stars.
22. the element of life, has four bonding sites which enables it to form complex molecules that make up all living things.