SELECT * FROM question_mgmt as q WHERE id=3968 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=181 and ex_no='5' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Is Matter Around Us Pure classify the following into elements compounds an

Question:

Classify the following into elements, compounds and mixtures.

(a) Sodium
(b) Soil
(c) Sugar solution
(d) Silver
(e) Calcium carbonate
(f) Tin
(g) Silicon
(h) Coal
(i) Air
(j) Soap
(k) Methane
(l) Carbon dioxide
(m) Blood

Answer:

Elements: Elements cannot break in similar particles because it is also a similar particle. e.g. fe, H etc. Sodium, Silver, Tin, Silicon 

Compound: When two or more than two elements are chemically combined known as compound. eg.: H2O. Calcium carbonate, Methane, Carbon Dioxide.

Mixture: It is a physical combination of two or more substances because there is no chemical reactions occur between them. Soil, Sugar Solution, Coal, Air, Soap, Blood.


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