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प्रश्न
State whether the following is physical or chemical changes.
glowing of a bulb -
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उत्तर
physical change,
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संबंधित प्रश्न
Melting of solid (wax) is a physical change.
Write true or false
Burning of sugar is a temporary change.
Fill in the blank
Heat is ________ by a gas during the process of condensation.
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 a physical or a chemical change.
Butter getting rancid
Classify the following as a physical or a chemical change.
Boiling of water
Read the paragraph and note down the various types of changes it mentions.
It was nearing six o'clock in the evening. The sun was setting. A breeze was blowing. Leaves on the tree were shaking. Sahil was sitting in the courtyard, rolling balls of wet soil, and shaping them into various toys. Then he felt hungry and went into the house. Mother made a dough from wheat flour and fried purees. While eating hot purees, his attention was drawn outside the window. It had started raining. There was lightning, too. Sahil was enjoying his dinner in the dim light.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
Compare the energy changes involved during a physical and a chemical change.
______ is the Universal Solvent.
