Separating the Components of a Mixture
Filtration, Decantation, Evaporation, Distillation, Crystallization, Centrifugation, Chromatography are Separating method of components
NCERT Solutions Chapter 2 Is Matter Around Us Pure
Get the all answers of all the questions in the detail and complete them from an in-depth understanding. We have covered the all questions based on the old and rationalized NCERT syllabus.
What are Properties of Solutions?
Solutions are homogeneous mixtures with uniform composition throughout.
What is Suspension and Colloidal Solution?
Suspension and colloidal solution is a heterogeneous mixture with Muddy water and milk are examples respectively
How Do Atoms Exist?
Atoms exist as the fundamental building blocks of matter. They combine to form molecules or ions, which in turn make up all substances in the universe.
Difference Physical and Chemical Changes
Physical changes involve alterations in the physical state or appearance of a substance without changing its chemical composition. Chemical changes involve the formation of new substances with different chemical properties.
Difference Between Mixtures and Compounds
Mixtures are combinations of two or more substances that are physically blended together but not chemically bonded, Compounds are substances composed of two or more different types of atoms chemically bonded together in fixed proportions
Which of the following are chemical changes?
Formation of new substances, Irreversible changes, Energy changes, Change in state, Change in color, Formation of gas, Formation of a precipitate
Classify the following into elements, compounds and mixtures: Sodium, Soil, Sugar solution, Silver, Calcium carbonate, Tin, Silicon, Coal, Air, Soap, Methane, Carbon dioxide, Blood
Elements: (a) Sodium (d) Silver (f) Tin (g) Silicon
Compounds: (e) Calcium carbonate (l) Carbon dioxide (k) Methane
Mixtures: (b) Soil (c) Sugar solution (h) Coal (i) Air (j) Soap (m) Blood
Which of the following will show “Tyndall effect”? (a) Salt solution, (b) Milk, (c) Copper sulphate solution, (d) Starch solution
Tyndall effect is the scattering of light by colloidal particles dispersed in a transparent medium. It is commonly observed in colloidal solutions such as milk, starch solutions, etc
Identify the solutions among the following mixtures. (a) Soil (b) Sea water (c) Air (d) Coal (e) Soda water
Out of the options listed, solutions are: (b) Sea water (c) Air (e) Soda water
Which of the following materials fall in the category of a “pure substance”?
Materials that fall in the category of a “pure substance” are Iron, Hydrochloric acid, Calcium oxide, Mercury.
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