1. slicing bread
2. baking bread
3. burning matchstick
4. freezing water
5. burning wood
6. molding clay
Answer (1)
1. slicing bread2. baking bread3. burning matchstick4. freezing water5. burning wood6. molding clay The activities that shows chemical changes are no. 2,3 and 5 while no. 1,4, and 6 go through physical changes.2.BAKING BREAD - the yeast fermented the sugar in the dough,producing carbon dioxide gas which makes the bread rise.The heat from the oven or microwave causes further chemical changes,resulting in the browning of the crust and setting the dough's structure or shape3.BURNING MATCHSTICK and;5.BURNING WOOD -Burming a wood and match is a chemical reaction called combustion,where cellulose reacts with oxygen to release energy as heat and light.This process breaks and forms new chemical bonds,creating CO2 and water.It is an irreversible reaction that releases energy,making fire useful for various applications. *Hope it helps
