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WorksheetsX Chemical Reactions 1
Total questions: 11
Worksheet time: 6mins
A chemical process or chemical reaction is a process in which
one substance take part
some substances are formes
substances formed with some observable changes
new substances are formed
In a chemical reaction or a chemical process arrow mark is used
between chemical substances
before products
after reactants
between reactants and products
Which one is not a chemical reaction?
Burning of match stick
microbial growth
chewing of food
respiration
Which one is not a correct characterstic of chemical reaction
Change in colour
Change in temperature
Formation of a product
Evolution of a gas
Symbolic representation of chemical process is called
Chemical equation
Physical process
Chemical reaction
Chemical formula
A balance chemical equation not
Follows Dalton's Law of Conservation of Atom
Follow Einstein's Law of Conservation of Energy
Follows Law of Conservation of Mass
Follows any Conservation law
AB + CD + EF → AD + EB + CF is
not a chemical reaction
a Balanced chemical equation
does not follow any conservation law
a unbalanced chemical equation
a H2 + b O2 → c H2O, For balancing this chemical equation, a, b and c should be
1, 2 and 3
1, 2 and 1
2, 1 and 1
2, 1 and 2
a Fe + b H2O → c Fe3O4 + d H2, For balancing this chemical equation, a, b, c and d should be
1, 2, 3 and 4
1, 4, 3 and 4
2, 2, 1 and 1
3, 4, 1 and 4
What is not about white here
CaCO3
MgO
PbI2
BaSO4
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