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प्रश्न
True or false
In a physical change no net energy change is involved.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
State the differences between a physical change and a chemical change.
State three differences between evaporation and boiling
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
True or false
Change of seasons is a non-periodic change.
Photosynthesis cannot take place at night.
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
