Fill in the blank
A new substance is formed in a _______ change.
[2] Physical and Chemical Changes
Chapter: [2] Physical and Chemical Changes
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Name the main metal present in the following:
Haemoglobin
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Name the main metal present in the following:
Chalk
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Name the main metal present in the following:
Chlorophyll
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Name the main metal present in the following:
Chocolate wrappers
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Give four examples of non-metallic elements.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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What do you understand by :
Metalloids
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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State four difference between compounds and mixtures.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Filtration
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Sedimentation and decantation
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
By using a separating funnel
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank
_______ are made up of same kind of atoms.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank:
________ and _______ are pure substances.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank:
_________ is a process to obtain a very pure form of a solid dissolved in a liquid.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Give one word answer
The process of transferring the clean liquid after the solid settles at the bottom of the container
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank
A pure substance has definite _______ and constant _________.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank
Use of a __________ to separate the components of a mixture of solids is based on the difference in the size of the components.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank.
_________ is used when the constituents of a mixture of solids have a difference in their weights.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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