मराठी

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

Advertisements
Advertisements

प्रश्न

Classify the following into elements, compounds and mixtures:

  1. Sodium
  2. Soil
  3. Sugar solution
  4. Silver
  5. Calcium carbonate
  6. Tin
  7. Silicon
  8. Coal
  9. Air
  10. Soap
  11. Methane
  12. Carbon dioxide
  13. Blood
लघु उत्तर
Advertisements

उत्तर

  • Elements: An element is a substance made up of one type of atom.
    (a) sodium, (d) silver, (f) tin, (g) silicon
  • Compounds: A compound is a substance made up of two or more types of atoms that are chemically bonded together to form molecules.
    (e) Calcium carbonate, (k) methane, (j) soap, (l) carbon dioxide
  • Mixtures: A mixture is a combination of substances that are not chemically bonded together.
    (c) Sugar solution, (b) soil, (i) air, (h) coal, (m) blood
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Is Matter around us Pure - Exercises [पृष्ठ २४]

APPEARS IN

एनसीईआरटी Science [English] Class 9
पाठ 2 Is Matter around us Pure
Exercises | Q 10. | पृष्ठ २४

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Name the terms for the particles of matter which may or may not have independent existence.


Which of the following materials fall in the category of a “pure substance”?

  1. Ice
  2. Milk
  3. Iron
  4. Hydrochloric Acid
  5. Calcium oxide
  6. Mercury
  7. Brick
  8. Wood
  9. Air

Fill in the following blanks with suitable words :

An element is made up of only one kind of ........


The three important metalloids are.............................. and ..........................


State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.


There are three substances X, Y and Z. The substance X does not have a fixed melting point or boiling point and it still shows the individual properties of its constituents. The substance Y is a pure substance which occurs in nature as such. The substance Y has a fixed melting point and boiling point but it cannot be broken down into simpler substances by any chemical means. The substance Z is also a pure substance whose properties are entirely different from those of its constituents. The substance Z can, however, be divided by electrolysis into two substances which belong to the same class of substances as Y.

  1. What type of substance could X be ? Name one substance like X.
  2. What type of substance could Y be ? Name one substance like Y.
  3. What type of substance could Z be ? Name one substance like Z.
  4. Which process involves absorption or release of an appreciable amount of energy : formation of substance X or formation of substance Z ?
  5. Name the three groups into which all the substances like Y are divided on the basis of their properties.

Choose the correct answer.

A 15% alcohol solution means :


21.5 g of sodium chloride dissolves in 60 g of water at 25°C. Calculate the solubility of sodium chloride in water at that temperature.


Milk of Magnesia is :


A carpenter wants to separate iron nails from saw-dust. Which method of separation should he choose ?


Write a method to separate a mixture of sand and potash alum.


How will you separate a mixture of iron filings, chalk powder and common salt ?


How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?


The dyes present in fountain pen ink can be separated by the technique of :


Explain the meaning of the term matter with special reference to the term ‘substance’.


Diffentiate between absorption and adsorption.


Evaporation is always accompanied by ______ in temperature. 


Give an example of liquid in gas.


Write a scientific reason.

Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×