A Journey through | Class 6 Science Notes
By ConceptScroll Team · Published on 17 July 2026 · 3 min read
A Journey through – this guide gives you a concise, exam-ready overview of A Journey through from Class 6 Science, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
What are the Different States of Water?
This section explains that water exists in three states: solid (ice), liquid (water), and gas (water vapour). It describes how ice melts to become water when heated, and water evaporates to become water vapour on further heating. The section includes an activity where students observe the shape, flow, and spreading behavior of ice, water, and water vapour. Ice retains its shape and does not flow or spread, water takes the shape of its container and flows, and water vapour spreads to fill the available space. The section also mentions that water vapour is invisible but present in the air. It encourages students to identify other solids, liquids, and gases in their environment and understand their properties. The section highlights that many substances, like wax, oil, and ghee, also exhibit these states.
📊 Diagram: Table 8.3 compares properties of ice, water, and water vapour in terms of shape, ability to flow, and ability to spread. Images show ice cubes, water in containers, and steam.
🧪 Activity: Activity 8.5: Observe and record the shape, flow, and spreading behavior of ice, water, and water vapour.
🔗 Connection: Leads to the next section on how states of water can be changed by heating or cooling.
Frequently asked questions
1. Which of the following best describes condensation? (i) The conversion of water into its vapour state. (ii) The process of water changing from a liquid into gaseous state. (iii) The formation of clouds from tiny water droplets. (iv) The conversion of water vapour into its liquid state.
The correct answer is (iv) The conversion of water vapour into its liquid state. Condensation is the process where water vapour in the air cools down and changes back into liquid water, forming droplets such as clouds.
2. Identify in which of the given processes, evaporation is very important— (i) Colouring with (a) crayons (b) water colours (c) acrylic colours (d) pencil colours (ii) Writing on paper with (a) pencil (b) ink pen (c) ball point pen
Evaporation is important in: (i) Colouring with (b) water colours and (c) acrylic colours because the liquid part of the colours evaporates to leave the colour on paper. (ii) Writing on paper with (b) ink pen and (c) ball point pen because the ink dries by evaporation of the solvent.
3. We see green coloured plastic grass at many places these days. Space around natural grass feels cooler than space around the plastic grass. Can you find out why?
Natural grass feels cooler because it contains water which evaporates, causing cooling. Plastic grass does not have water and hence no evaporation occurs, so it does not cool the surrounding air.
4. Give examples of liquids other than water that evaporate.
Examples of liquids other than water that evaporate include alcohol, petrol, kerosene, acetone, and cooking oil.
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