Question

Most physical changes are reversible. Give reasons with two examples?

Answer 1

Explanation:

In physical change no new compund is formed. physical changes are also known as reversible changes. Eg-cutting of wood, paper; melting of wax, stretching of ruber band etc.

Answer 2

$\huge\rm\underline{\underline{\purple{Qᴜᴇsᴛɪᴏɴ:-}}}$

Gɪᴠᴇ ʏᴏᴜʀ ᴄᴏᴍᴍᴇɴᴛ ᴏɴ "Mᴏsᴛ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇs ᴀʀᴇ ʀᴇᴠᴇʀsɪʙʟᴇ".

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$\huge\rm\underline{\underline{\blue{Aɴsᴡᴇʀ:-}}}$

Iɴ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇs ɴᴏ ɴᴇᴡ ᴘʀᴏᴅᴜᴄᴛ ɪs ғᴏʀᴍᴇᴅ. Sᴏ ᴛʜᴇsᴇ ᴄʜᴀɴɢᴇs ᴄᴀɴ ʙᴇ ʀᴇᴠᴇʀsᴇᴅ ᴇᴀsɪʟʏ. Tʜᴜs ᴍᴏsᴛ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇs ᴀʀᴇ ʀᴇᴠᴇʀsɪʙʟᴇ.

1. Dɪssᴏʟᴜᴛɪᴏɴ ᴏғ sᴜɢᴀʀ ɪɴ ᴡᴀᴛᴇʀ ɪs ᴀ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇ. Wᴇ ᴄᴀɴ ɢᴇᴛ ʙᴀᴄᴋ sᴜɢᴀʀ ᴀɴᴅ ᴡᴀᴛᴇʀ ʙʏ ᴇᴠᴀᴘᴏʀᴀᴛɪᴏɴ.
2. Fʀᴇᴇᴢɪɴɢ ᴏғ ɪᴄᴇ ғʀᴏᴍ ᴡᴀᴛᴇʀ ɪs ᴀ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇ. Oɴ ᴍᴇʟᴛɪɴɢ ɪᴄᴇ ᴡᴇ ɢᴇᴛ ʙᴀᴄᴋ ᴡᴀᴛᴇʀ ᴀɢᴀɪɴ.

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