1) Tearing a piece of paper 2) Burning a piece of paper 3) boiling water 4) adding 30ml of milk to a glass of cold water 5) bending a peice of wire 6) baking a cake 7) A lake freezing for the winter 8) cutting a cake 9) Milk going sour 10) chemical Battery usage

Is this a chemical or physical change (1 point for each correct answer)

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