Long-Answer Questions
1. State the differences between an element and a compound.
2. Give three points of difference between a mixture and a compound.
3. Describe the separation of salt from sand.
4. Describe fractional distillation.
5. How would you separate the dyes of an ink?
6. Describe two methods to separate iron filings and sulphur powder from a mixture
7. A mixture contains carbon, sulphur and nitre. How would you separate them?
Answers
Answer:
element is made of only on type of a atom or a molecule
compound is made of two or more than two type of elememt in a fixed ratio
elements remains the same if itbis divided from
but compounds will be separated from its constituents after dividing
ex for elememt gold and silver
example for compounds is water h2O. during electolysis processs water is seperated into hydrogen and oxygen.
mixtute is a substance which is made up from two or more pure substances
compounds areade of of atoms and molecules of any kingld
mixture are made in indefinite proportion
compounds are made in a fixed proportion
mixtures can be separatd via physical methods
compounds are seperated only via chemical method
ex for mixture is sandwater, salt solution. ex for compounds is water and ammonia
separtion from salt is simple.
in a bowl of water add tge mixture
salt will be melted not sand
after that soke the solution into a container
dry it for sunlight
u qill get salt again
4th and 5th ome is not known sorry
iron fillings from sulphur.. is separated throuhgh magnet. magnaet will attract the iron fillings and it woll be easily seperated
7th is not known sorry
i hope my answers help u