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प्रश्न
Describe simple experiments to prove that gases have mass.
उत्तर
Have mass
Experiment:
An inflated balloon placed on one side of the scale causes it to tilt towards one side.
Conclusion: The scale tilts due to the mass of the gas, hence all gases have mass.
संबंधित प्रश्न
State two characteristic properties of a solid.
Compare the properties of solids, liquids and gases in tabular form.
Give two reasons for saying that wood is a solid.
What are fluids? Give two examples
Write whether the following statement is true or false:
If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely
State the property of the following substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
Which of the following is a solid?
Discuss briefly on three states of matter.
What is the physical state of water at 250°C.
A strong current of trivalent gaseous boron passed through a silicon crystal decreases the density of the crystal due to part replacement of silicon by boron and due to interstitial vacancies created by missing Si atoms. In one such experiment, one gram of silicon is taken and the boron atoms are found to be 1000 ppm by weight, when the density of the Si crystal decreases by 12%. The percentage of missing vacancies due to silicon, which are filled up by boron atoms will be ____ g. [Given · Atomic wt. Si= 30, B = 11]
