Are the naturally occurring material in nature chemically pure substances?
Answers
Answer:
1.Air is a mixture but not compound. Its constituents can be separated. For example: oxygen, nitrogen etc.
2.=>>A compound is a thing that is composed of two or more separate elements
3.Iron is an element.
Milk is an mixture
Seawater has salts and others so compound
4.Most of the naturally occurring material in nature are not chemically pure substances. They are purified by chemical or physical process. For example the minerals are available mixed with other material or at least mixed will dust particles.
Explanation:
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Answer:
1) mixture
2)Yes
3)a)elements
b)mixture
c)mixture
4)No
Explanation:
1)Air is a mixture that contains the elements nitrogen, oxygen and argon, and also the compound carbon dioxide.
2) Water is a compound because compounds are made up of different elements in fixed proportion by mass likecouse, in water molecule, hydrogen and oxygen form compound H2O in the ratio of 1.
3)a) Iron is a brittle, hard substance, classified as a metal in Group 8 on the Periodic Table of the Elements. The most abundant of all metals, its pure form rapidly corrodes from exposure to moist air and high temperatures.
b) Seawater is a mixture of many different substances. Some of these substances can be observed when the water in seawater evaporates and leaves behind salt. Water, H2O, is a pure substance, a compound made of hydrogen and oxygen.
c) Now as we know that we get milk from the cow and it is a mixture of water, fat and solids (in the form of milk protein and carbohydrates) which is mixed irrationally. Therefore milk is a mixture not a pure substance. Main compounds of milk are lactose and casein.
4) Most of the naturally occurring material in nature are not chemically pure substances. They are purified by chemical or physical process. For example the minerals are available mixed with other material or at least mixed will dust particles.