Science PeTa

3. an element that has properties that are intermediate between those of metals and nonmetals.
5. a lasting attraction between atoms, ions or molecules
8. Matter made up of one kind of metal
10. a drawing of a molecule that illustrates the connectivity of the compound
12. To which element group does argon belong?
15. This type of bonding occurs between two atoms of the same element or of elements close to each other in the periodic table
19. They are reactive nonmetallic elements
20. a column of elements in the periodic table

1. six chemical elements in group 2 of the periodic table
2. the electrons in the outermost electron shell of an isolated atom of an element
4. the distance from the centre of the nucleus to the outermost shell containing electrons.
6. a chemical element that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids, and stable compounds with hydrogen.
7. a row of chemical elements
9. the energy required to remove an electron from a gaseous atom or ion
11. a substance formed when two or more chemical elements are chemically bonded together
13. a subatomic particle found in the nucleus of every atom
14. the complete transfer of valence electrons between atoms
16. consist of the chemical elements lithium, sodium, potassium, rubidium, caesium, and francium
17. Which element has the lowest atomic mass?
18. Which element is number 28 on the periodic table?