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प्रश्न
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
विकल्प
chemical
physical
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उत्तर
The matter is added or removed during a chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Write short answer.
Give two examples of periodic changes
State whether the following is physical or chemical changes.
photosynthesis —
Separate the following into physical and chemical changes :
Sublimation of a solid, Decomposition of water into hydrogen and oxygen by passing electric current, Formation of clouds, Making a fruit salad from raw fruits, Dissolving carbon dioxide in water
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
Water is the universal solvent. Why?
Keeping a stone in sunlight for few hours is ______.
