Why formation of bubbles is a sign of chemical change?
Formation of bubbles are sign of a chemical reaction.
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Matter that does NOT have a definite volume or shape, takes the shape of its container, particles are far apart, can be compressed and move quickly in all directions
GASES
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Temperature at which a liquid changes into a gas is called
Boiling point. The boiling point of water is 100 °C
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Process in which 2 or more substances interact to produce one or more new substances
Chemical reaction. The new substance applies the Law of conservation of mass, no mass is lose in the process.
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Why production of odor is a sign of chemical change?
Bad odor in food means that food has undergone a chemical change.
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The state of matter is determined by
the arrangement and movement of its particles
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Temperature at which a liquid changes into a solid is called
Freezing point. The freezing point of water is 0° C.
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Why light and heat are signs of chemical change?
Light and heat are a sign of a chemical reaction.
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Characteristic of a substance that can only be observed by changing it into a different substance
Chemical property
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Why change of color is a sign of chemical change?
A fruit that turns brown is a sign of a chemical reaction
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Name the three states of matter
SOLID, LIQUID AND GAS
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Why formation of a solid is a sign of chemical change?
Formation of a solid is a sign of a chemical reaction.