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May 18, 2017

posted May 18, 2017, 1:46 PM by Unknown user   [ updated May 18, 2017, 1:47 PM ]
Science: keep practicing those Math skills for counting atoms. We will start balancing equations tomorrow. 

Also - remember that I have extra help every day during recess. No one has come yet for extra help. 

Determine how many atoms of each element are present:

1)         CaF2               Ca=                             F=

2)         Be(OH)2         Be=                             O=                               H=

3)         NO2                 N=                               O=

4)         Al2(SO4)3        Al=                              S=                               O=

5)         NH4NO3         N=                               H=                               O=

6)         2S2F2              S=                               F=

7)         2Na3(PO4)2    Na=                             P=                               O=

8)         3CH4              C=                               H=

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