M1:U2.L2

5. Recall that there are more than 100 elements, each with a unique set of physical and chemical _____
8. The melting point of carbon is higher than the melting point of _____.
9. Mendeleev predicted that scientists would _________elements that would fit into the spaces in the periodic table
10. _______ was the man who arranged the elements in rows of increasing atomic mass.
12. There are ____ in the physical properties of a group such as density, melting point, and boiling point.
14. Boiling point and ______ also follow a periodic pattern
16. _____ can use the periodic table to predict the properties of new elements they create.

1. In group 15 of the periodic table ______ is a recently discovered element.
2. ___ is a column on the periodic table
3. ______ are also considered periodic because they are a repeating pattern
4. In period 3 of the periodic table _____ is a metalloid
6. the periodic table is a unique chart of the ______ arranged into rows and columns according to their physical and chemical properties
7. The rows in the periodic table are called _____
11. _____ are located on the right side of the periodic table
13. Mendeleev believed that the atomic masses of certain elements must be ______ because the elements appeared in the wrong place on the periodic table.
15. _____ found that if elements were listed according to increasing atomic number instead of increasing atomic mass, columns would contain elements with similar properties.