science review 1. Word Scramble
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Question | Answer |
why did Mendeleev leave spaces in the periodic table? | So that new elements could be discoverd. |
Mendeleev arranged the elements into rows of? | Increasing mass. |
What two elements have similar properties? | Chlorine and Bromine. |
True or False, Mendeleev was the first scientist to arrange elements into a periodic table? | False. |
True or False, the modern periodic table is arranged by increasing protons? | False. |
Name three catigories into wich elements are classified based on genral properties. | Metals Nonmetals Metalloids. |
What two elements in period 3 are the most reactive? | sodium and chlorine. |
Name in order the three highly reactive elements in period 1 | Lithium,Sodium,Potassium. |
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fabianw
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