TATA DAV PUBLIC SCHOOL, NOAMUNDI
HOME ASSIGNMENTS APRIL – MAY 2014
CLASS – VII (A& B)
SUBJECT - CHEMISTRY
1) Balance the following Equations:
i) KOH + H2SO4
ii) Mg(OH)2 + HNO3
------------------>
K2SO4 + H2O
------------------> Mg(NO3)2 + H2O
iii) Ca(OH)2 + HCl
------------------>
CaCl2 + H2O
iv) AgNO3 +Cu
------------------>
Cu(NO3)2 + Ag
v) H2 +O2
------------------>
H2O
2) Write the chemical formulae of the following.
Aluminium Nitrate, Copper Carbonate, Iron Oxide, Magnesium
Phosphate, Zinc Hydroxide, Sodium Sulphate.
3) Some acid , bases and salts are commonly used in our daily life,
find out the name of such substances, specify whether they are
acids, bases or salts and write their uses.