Answer: Burning wood, souring milk, browning of a cut apple
Include in your answer:
-foam is a colloid.
-colloids include gas dispersed in a liquid.
-colloids include gas dispersed in a solid.
The answer is C, good luck mate
The first question the mass of Zinc would be 104g
152-64 =88
192-88=104
The second question the mass would be 159g
127+32 =159g