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प्रश्न
What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?
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उत्तर
Materials that are made up of two or more pure substances and show the properties of their constituents are called mixtures.
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संबंधित प्रश्न
Define matter.
Name the terms for the particles of matter which may or may not have independent existence.
Name one solid, one liquid and one gaseous non-metal.
Name the property which allows metals to be hammered into thin sheets.
Fill in the following blanks with suitable words :
The elements which are sonorous are called ..........................
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
Name a metal which is yellow in colour.
What is the most common way of expressing the concentration of a solution ?
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
What will happen if a saturated solution is :
- heated
- cooled
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
Which of the following represents the solubility of sugar in water at 20°C ?
What is the difference between colloids and suspensions ?
Name the source from which nitrogen and oxygen are obtained on a large scale.
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
 |
 |
 |
The arrangement of particles in three different phases of matter is shown above.
- Which state is represented by Fig. 1?
- In which state will the inter-particle attraction be maximum?
- Which one of them cannot be contained in an open vessel?
- Which one can take the shape of its container?
______ is a smallest particle.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Define the term matter.
