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BidishaKashayap1333
@bidishakashayap1333
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Joined: Oct 11, 2021
Last seen: Jul 27, 2023
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Topics: 2174 / Replies: 0
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Topic
Give two reasons for supposing that water is a compound and not a mixture.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 288
Topic
Is air a mixture or a compound? Give three reasons for your answer.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 326
Topic
Choose the solutions from among the following mixtures: Soil, Sea-water, Air, Coal, Soda-water
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 234
Topic
How would you confirm that a colourless liquid given to you is pure water?
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 303
Topic
Give reason why: (a) Copper metal is used for making electric wires. (b) Graphite is used for making electrode in a dry cell.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 101
Topic
State any two properties for believing that aluminium is a metal.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 250
Topic
Compare the properties of metals and non-metals with respect to (i) malleability (ii) ductility, and (iii) electrical conductivity.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 175
Topic
State two physical properties on the basis of which metals can be distinguished from non-metals.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 221
Topic
What are the three groups into which all the elements can be divided? Name two elements belonging to each group.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 218
Topic
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 83
Topic
Name two solid, liquid and two gaseous elements at room temperature.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 85
Topic
State three reasons why you think air is a mixture and water is a compound.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 294
Topic
Which of the following substances are elements? Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 79
Topic
What is the other name for impure substances? Give two examples of impure substances.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 259
Topic
Which of the following are ‘pure substances’? Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 283
Topic
What are the two types of pure substances? Give one example of each type.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 76
Topic
What are pure substances? Give two examples of pure substances.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 281
Topic
What elements do the following compounds contain? Sugar, Common salt
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 89
Topic
Classify the following as elements or compounds: Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 98
Topic
Classify the following into elements and compounds: (i) H2O (ii) He (iii) Cl2 (iv) CO (v) Co
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 197
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