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प्रश्न
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
उत्तर
physical change,
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संबंधित प्रश्न
Which of the following are chemical changes?
- Growth of a plant
- Rusting of iron
- Mixing of iron fillings and sand
- Cooking of food
- Digestion of food
- Freezing of water
- Burning of candle
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
water cycle in nature —
State whether the following is physical or chemical changes.
mixing oil with water —
Sublimation is classified as a physical change. Why ?
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Select the chemical changes from the following list of changes
Rotting of eggs.
Adding sugar to milk is a physical change.
Explain the characteristics of physical change with examples.
