Download App

Matter in Our Surroundings — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings3 Marks
Question
Show by an experiment that by increasing the temperature, the substance can be changed into liquid and then into vapours.
✓

Answer

Take some ice cubes in a beaker and heat it by spirit lamp or Bunsen burner and put a thermometer in the beaker, when the temperature reaches to zero degree Celsius the temperature will not increase.
Till the whole amount of ice does not changes into its liquid state next heat it continuously and then when the temperature reaches hundred degree Celsius the temperature will not increase till the whole amount of water does not changes into its gaseous state as water vapours.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Che-3M]" from Matter in Our Surroundings→Matter in Our Surroundings — all question types→Science STD 9 question papers→CBSE Board STD 9 question papers→CBSE Board question paper generator→

Similar questions

Nucleus of an atom is positively charged and electrons around it are negatively charged. Then why do electrons not just fall to the nucleus out of attraction?
→
Complete the following table.
ElementsAtomic numberMass numberProtonsElectronsneutronsElectronic configurationValency
Chlorine17_________18______
Silicon___28___14_________
Fluorine______9___10______
→
Calculate the mass of sodium sulphate required to prepare its 20% (mass percent) solution in 100g of water?
→
State two characteristic properties each of:
  1. A solid
  2. A liquid
  3. A gas
→
What is chromatography? State its two applications.
→
A piece of chalk can be broken into small particles on hammering, but it is not possible to break a piece of iron in the same fashion. Why?
→
A solution contains 50mL of alcohol mixed with 150mL of water. Calculate the concentration of this solution.
→
The scientists now say that there are actually five states of matter A, B, C, D and E. The state A has a fixed volume but no fixed shape. The state B can be compressed very easily by applying pressure and state C has a fixed shape as well as a fixed volume. The state D is mixture of free electrons and ions whereas state E is named after an Indian scientist and a famous physicist.
  1. Name the physical states (i) A (ii) B (iii) C (iv) D, and (v) E.
  2. Name one substance belonging to state C which can directly change into vapours on heating. What is this process known as?
  3. Name one substance which normally belongs to state B but whose solid form changes directly into gaseous state.
  4. Name the most common substance belonging to state A.
  5. Which state of matter makes the sum and other stars to glow.
→
An element A forms an oxide A2O5.
  1. What is the valency of element A?
  2. What will be the formula of chloride of A?
→
It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why?
→