no it is still thr same
No, melting is a physical change, not a chemical change. When the sun heats up and melts a crayon, it changes from a solid to a liquid state, but the chemical composition of the crayon remains the same.
Melting is a physical process.
The crayon melting in the sun is a physical change because only its state changes from solid to liquid without forming any new substances.
Physical. It is still crayon, and the change can be undone by cooling it until it hardens.
No. It is a nuclear change.
Burning wood in the fireplace is a chemical change because the wood undergoes combustion, leading to the formation of new substances (ash, smoke, and gases). Melting ice cream in the sun, crushing a soda can, and mixing salt and sugar are physical changes as they do not involve the formation of new substances, but rather a change in physical appearance or state.
Yes, yellowing of newspapers in the sun is a chemical change. The exposure to sunlight causes a chemical reaction in the paper fibers, breaking down the cellulose molecules and leading to a change in color.
Yea Photosynthesis is the chemical change in plants that uses the sun's energy and converts it into glucose and oxygen.
It is a chemical change. Fermentation causes bonds to break within a compound and new bonds form thus chemically changing the initial 'reactant'.
Photosynthesis is the chemical change of the suns energy into glucose and oxygen.
This chemical reaction is called photosynthesis.
It is a chemical change, because the sun converts hydrogen into helium to create heat and light.