Atoms,Periodic Table Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
what does the atomic number equal | number of protons |
who organized the first periodic table | Mendeleev |
who arranged the periodic table in 1913 | Henry Moseley |
what elements have a lot in common | same periods |
how many periods are there, how many groups/families | 7, 18 |
what is the 1st group called | alkali metals |
what is the 2nd family called | alkaline earth metals |
what is the 17th group called | halogens |
what is the 18th family called | noble gases |
what are noble gases | gases that do not react well with other elements |
Name 3 characteristics of metals such as cobalt | shiny, solids at room temperature, good heat/electricity conductors |
Name 3 characteristics of nonmetals such as oxygen | usually gases at room temperature, brittle solids, DO NOT conduct heat/electricity well |
synthetic element | man-made element, above the atomic number 92 |
if a metal can be easily hammered into a shape it is called | malleable |
alkaline earth metals are | highly reactive |
transition metals are | less reactive |
what are metalloids | have properties of metals and nonmetals |
what do we call something in between a conductor and an insulator | a semi-conductor |
the atomic mass is the number of | protons + neutrons |
protons are equal to | electrons |
the number of neutrons is | atomic mass-atomic number |
Created by:
Hattison13
Popular Chemistry sets