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Which is an example of a physical change?
A)Mixing blue and yellow paint to create green paint
B)Adding water and yeast to bread dough in order to make it raise.
C)Mixing two liquids together in a test tube and the tube becoming warm.
D)Adding a piece of chalk containing calcium carbonate to a glass of mild acid causing the formation of a foam of bubbles.
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Which is an example of a physical change?
A)Mixing blue and yellow paint to create green paint
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