12 Questions
What type of changes are broadly discussed in the text?
Physical and chemical changes
Which activity involves cutting a piece of paper into smaller pieces and observing their properties?
Activity 5.1
What is the outcome of adding water to chalk dust according to Activity 5.2?
No observable change
In which activity is a mixture of ice and water created?
Activity 5.3 with ice in a tumbler
What does souring of milk represent in terms of changes?
Chemical change
Which change is represented by a stretched rubber band?
Physical change
What type of change is the transformation of water from solid to liquid or gas to liquid?
Physical change
What is the process called when iron acquires a film of brownish substance after exposure to air?
Oxidation
Which activity demonstrates the formation of a new substance?
Activity 5.5 - Heating a hack-saw blade
What is the powdery residue left behind when magnesium ribbon burns in the atmosphere?
Magnesium oxide
Which property does not change in a physical change?
Formation of new substances
What happens to the color of the hack-saw blade tip when heated and then cooled?
It changes color temporarily
Explore your knowledge of changes in the surroundings by identifying and listing ten common changes observed in daily life. Learn about various types of changes like dissolving sugar in water, setting curd from milk, and souring of milk through this quiz.
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