Advertisements
Advertisements
Question
What is the other name for impure substances ? Give two examples of impure substances.
Advertisements
Solution
Mixture is considered as an impure substance, as it contains two or more different kinds of particles or substances mixed together.
Examples: Milk, sea water
APPEARS IN
RELATED QUESTIONS
Liquids have definite volume but do not have definite shape.
Fill in the blank :
The substances which can flow are called ________
Name the property which enables metals to be drawn into wires.
What is meant by saying that non-metals are brittle ?
The three important metalloids are.............................. and ..........................
What are the two types of pure substances? Give one example of each type.
Which of the following does not have a fixed melting point/boiling point ?
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.
- What type of substance could X be ? Name one substance like X.
- What type of substance could Y be ? Name one substance like Y.
- What type of substance could Z be ? Name one substance like Z.
- Which process involves absorption or release of an appreciable amount of energy : formation of substance X or formation of substance Z ?
- Name the three groups into which all the substances like Y are divided on the basis of their properties.
What will happen if a saturated solution is :
- heated
- cooled
What is a colloid ? Give two examples of colloids (or colloidal solutions)
What difference in the properties of oil and water enable their separation by a separating funnel ?
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
Which among the following ______ will get attracted to by magnet?
All the matter made of ______.
______ is a smallest particle.
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
Intermolecular space is maximum in ______.
The physical state of water at 373 K is ______.
Define the term matter.
