what is a chemical change
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Chemical Change:
- Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
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❥ A ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ ᴏᴄᴄᴜʀꜱ ᴡʜᴇɴ ᴀ ɴᴇᴡ ꜱᴜʙꜱᴛᴀɴᴄᴇ ɪꜱ ғᴏʀᴍᴇᴅ ᴛʜʀᴏᴜɢʜ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ʟɪᴋᴇ ᴡʜᴇɴ ғʀᴜɪᴛ ʀɪᴘᴇɴꜱ ᴏʀ ʀᴏᴛꜱ. Wʜᴇɴ ꜱᴏᴍᴇᴛʜɪɴɢ ᴜɴᴅᴇʀɢᴏᴇꜱ ᴀ "ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ" ᴀɴᴅ ᴀ ɴᴇᴡ ꜱᴜʙꜱᴛᴀɴᴄᴇ ɪꜱ ғᴏʀᴍᴇᴅ ᴀꜱ ᴀ ʀᴇꜱᴜʟᴛ, ᴡᴇ ᴄᴀʟʟ ᴛʜɪꜱ ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ.
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