EXERCISE
in the blanks:
18 grams of H O contains
molecules.
A change which alters the composition of a substance is called.......
A reaction in which a chemical substance breaks down to form two
or more simpler substances, is called....
i The reaction of NaCl with AgNO, is given as
NaClag) + AgNO,lag) AgCl(s) - NaNO,(aq)
is the reaction of the type...
M When metals react with acids or water then produce
Vi .............. is the reaction in which two or more substances combine
together to form a single substance.
(vii) A reaction in which a substance burns in oxygen to produce heat
and flame is called........
(vi) .......... is the short hand method to describing a chemical reactio
gas
Answers
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Answer:
i. 1 molecule
ii. chemical
iii. decomposition
Btw is this site for getting the H.W. done without studying on your own.
These questions are very direct.
Explanation:
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