Question

Define Thermal Expansion! ​

Answer 1

Explanation:

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance.

Answer 2

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ᴛʜᴇʀᴍᴀʟ ᴇxᴘᴀɴsɪᴏɴ ɪs ᴛʜᴇ ᴛᴇɴᴅᴇɴᴄʏ ᴏғ ᴍᴀᴛᴛᴇʀ ᴛᴏ ᴄʜᴀɴɢᴇ ɪᴛs sʜᴀᴘᴇ, ᴀʀᴇᴀ, ᴠᴏʟᴜᴍᴇ, ᴀɴᴅ ᴅᴇɴsɪᴛʏ ɪɴ ʀᴇsᴘᴏɴsᴇ ᴛᴏ ᴀ ᴄʜᴀɴɢᴇ ɪɴ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ, ᴜsᴜᴀʟʟʏ ɴᴏᴛ ɪɴᴄʟᴜᴅɪɴɢ ᴘʜᴀsᴇ ᴛʀᴀɴsɪᴛɪᴏɴs. ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪs ᴀ ᴍᴏɴᴏᴛᴏɴɪᴄ ғᴜɴᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴀᴠᴇʀᴀɢᴇ ᴍᴏʟᴇᴄᴜʟᴀʀ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ ᴏғ ᴀ sᴜʙsᴛᴀɴᴄᴇ.