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Covalent Bond Between Similar Types of Atoms

Salt,sugar,ch...

Question

Salt,sugar,chalk and sand are all......................

A.elements

B.compounds

C.mixtures

D.solution

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Solution

these are compounds

compound is a substance formed when two or more chemical elements are chemically bonded together. ... Water: two hydrogen atoms bonded to an oxygen atom. The type of bonds holding elements together in a compound can vary: two common types are covalent bonds and ionic bonds.

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Similar questions

(a) What is meant by (i) elements (ii) compounds, and (iii) mixtures? Write down the names of two elements, two compounds and two mixtures.

(b) Classify the following into elements, compounds and mixtures :

Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk

Q. Classify the following materials as homogeneous and heterogeneous mixtures.
(soda-water, wood, air, soil, petrol and water mixture, alcohol and water mixture, chalk and water mixture, sand and water mixture, sugar and water mixture, pumice stone, smoke, salt and water mixture, cough syrup, gun powder).

Q. Which of the following mixtures can be separated by filtration?
(a) a mixture of sand and chalk powder
(b) a mixture of chilli powder and water
(c) a mixture of salt and pepper
(d) a solution of glucose and water

Q. Write a method to separate water, sugar and sand from a mixture of sand in a sugar solution.

Q. How can you show that some solids like sugar, salt are soluble in water whereas solids like chalk powder and sand are not soluble in water?

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Covalent Bond Between Similar Types of Atoms

Standard VII Chemistry

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