Advertisements
Advertisements
Question
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
Advertisements
Solution
An element is made up of only one kind of atoms.
APPEARS IN
RELATED QUESTIONS
Gases have definite volume but no definite shape.
Name the processes involved in two cases.
Fill in the blank
All matter is made up of tiny particles called ______
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
Which type of elements, metals or non-metals, show the property of brittleness ?
What is the other name for impure substances ? Give two examples of impure substances.
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Out of a colloid, solution and a suspension :
which one has the largest particles ?
Define Foam Give one example.
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
What is the effect of temperature on the solubility of solids in liquids ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
How would you separate iodine from a mixture of iodine and common salt ?
One of the following does not undergo sublimation. This one is :
Explain the meaning of the term matter with special reference to the term ‘substance’.
Wipe the board with a duster and then tap the duster against the table. What do you see?
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?
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
