Question

what is chemical change​

Answer 1

ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇs ᴏᴄᴄᴜʀ ᴡʜᴇɴ ᴀ sᴜʙsᴛᴀɴᴄᴇ ᴄᴏᴍʙɪɴᴇs ᴡɪᴛʜ ᴀɴᴏᴛʜᴇʀ ᴛᴏ ғᴏʀᴍ ᴀ ɴᴇᴡ sᴜʙsᴛᴀɴᴄᴇ, ᴄᴀʟʟᴇᴅ ᴄʜᴇᴍɪᴄᴀʟ sʏɴᴛʜᴇsɪs ᴏʀ, ᴀʟᴛᴇʀɴᴀᴛɪᴠᴇʟʏ, ᴄʜᴇᴍɪᴄᴀʟ ᴅᴇᴄᴏᴍᴘᴏsɪᴛɪᴏɴ ɪɴᴛᴏ ᴛᴡᴏ ᴏʀ ᴍᴏʀᴇ ᴅɪғғᴇʀᴇɴᴛ sᴜʙsᴛᴀɴᴄᴇs. ᴛʜᴇsᴇ ᴘʀᴏᴄᴇssᴇs ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴs ᴀɴᴅ, ɪɴ ɢᴇɴᴇʀᴀʟ, ᴀʀᴇ ɴᴏᴛ ʀᴇᴠᴇʀsɪʙʟᴇ ᴇxᴄᴇᴘᴛ ʙʏ ғᴜʀᴛʜᴇʀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴs

Answer 2

Answer: when 2 substances combine together they form a new substance that new substance is the chemical change of the 2 substances....they are mostly irreversible.

example:-Burning wood.

Souring milk.

Mixing acid and base.

Digesting food.

Cooking an egg.

Heating sugar to form caramel.

Baking a cake.

Rusting of iron.

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