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WorksheetsVIII Sci-Qiz20ii
Total questions: 10
Worksheet time: 20mins
The composition of a substance does not change in ________ change.
chemical
physical
biochemical
Which of the following is a chemical change?
Cutting of wood
Melting of ice
Ripening of fruit
Change of curd into milk is a _____________ change.
reversible
irreversible
physical
Expansión on heating and contraction on cooling of metal is a ____________ change.
physical
chemical
irreversible
Which of the following statement is correct?
Evaporation is a chemical change
Digestion of food is a chemical change
Burning of paper is a physical change
The processes involved in photosynthesis is _____________ change
organic
inorganic
biochemical
In an endothermic reaction, heat is ________.
absorbed
released
give out
If the chemical reaction is exothermic, the temperature would ___________.
stay the same
increase
decrease
In which type of change a new substance is formed?
Physical change
Reversible change
Chemical change
Which of the following changes is accompanied by sound?
Photosynthesis
Spoilage of food
Explosion of fire works
