Question

What is physical and chemical change​

Answer 1

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ᴛʜᴇ ᴅɪғғᴇʀᴇɴᴄᴇ ʙᴇᴛᴡᴇᴇɴ ᴀ ᴘʜʏsɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ᴀɴᴅ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ɪs ᴄᴏᴍᴘᴏsɪᴛɪᴏɴ. ɪɴ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ, ᴛʜᴇʀᴇ ɪs ᴀ ᴄʜᴀɴɢᴇ ɪɴ ᴛʜᴇ ᴄᴏᴍᴘᴏsɪᴛɪᴏɴ ᴏғ ᴛʜᴇ sᴜʙsᴛᴀɴᴄᴇs ɪɴ ǫᴜᴇsᴛɪᴏɴ; ɪɴ ᴀ ᴘʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇ ᴛʜᴇʀᴇ ɪs ᴀ ᴅɪғғᴇʀᴇɴᴄᴇ ɪɴ ᴛʜᴇ ᴀᴘᴘᴇᴀʀᴀɴᴄᴇ, sᴍᴇʟʟ, ᴏʀ sɪᴍᴘʟᴇ ᴅɪsᴘʟᴀʏ ᴏғ ᴀ sᴀᴍᴘʟᴇ ᴏғ ᴍᴀᴛᴛᴇʀ ᴡɪᴛʜᴏᴜᴛ ᴀ ᴄʜᴀɴɢᴇ ɪɴ ᴄᴏᴍᴘᴏsɪᴛɪᴏɴ.

Answer 2

Answer:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.

Explanation:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition

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