An example of a chemical change?

Answer 1

I only have 4 sorry

1. Burning wood in a fireplace: When the wood lights up and begins to gently burn it eventually turns into ashes. As it burns though, heat is produced, there is light, and the smoke is released through the chimney. The chemical reaction of the heat, light, and smoke are characteristics of a chemical reaction resulting in new matter, the ashes. The ashes cannot be turned back into the wood.

2. Ripening and rotten bananas: Several bananas are on the countertop at home. They are green when purchased, but eventually they begin to turn yellow and eventually ripen to the point of becoming rotten. The chemical composition of the bananas has changed over time resulting in new molecules. One cannot unripen a banana.

3. Rusting: A nail, or other metal begins rusting in the outdoors. It is due to the chemical reaction between the metal and the moisture in the air. The nail can be cleaned of its rust, but the rust itself cannot be turned back into the original metal.

4. Leaves in the autumn: During the spring and summer the leaves on trees are a vibrant green and give off oxygen as the plants make their own food through photosynthesis. However, when autumn arrives the chemical reaction causes the leaves to become brown and ultimately fall off the tree. The brown leaves cannot be turned green again.

Answer 2

There are many ways in which things change chemically. Five easy examples of chemical change are, Iron rusting, cooking an egg, baking a cake, combustion of wood (burning), and mixing baking soda and vinegar to create carbon dioxide.

Answer 3

A chemical change is the process of liquid nitrogen becoming a gas. Another chemical process is oxygenation of blood when introduced to the air.

Answer 4

Whene a fire burns

An apple rots

Plastic melts by heat or friction

anything changes due to chemicals...

Answer 5

a example of chemical change is fireworks

Answer 6

Wood burning into ashes

Answer 7

the wood turning into ashes by the fire