Question

Use your brain
power!
Using the chart of ions/radicals and the cross-multiplication method, write the chemical formulae of the following compounds :
1)Calcium carbonate,
2)Sodium bicarbonate,
3) Silver chloride,
4)Calcium hydroxide, 5)Magnesium oxide, 6)Ammonium phosphate,
7)Cuprous bromide,
8)Copper sulphate, 9)Potassium nitrate,
10)Sodium dichromate.
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Answer 1

1. CaCO3
2. NaHCO3
3. AgCl2
4. Ca(OH)2
5. MgO
6. (NH4)3PO4
7. CuBr2
8. CuSO4
9. KNO3
10. Na2Cr2O7