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When a chocolate bar melts in the sun a physical or chemical change?
When a chocolate bar melts in the sun, it is a physical change. This is because the chocolate undergoes a phase change from a solid to a liquid without changing its chemical composition.
Is the crayon melting in the sun is physical or chemical change?
The crayon melting in the sun is a physical change because only its state changes from solid to liquid without forming any new substances.
Is a crayon melting in the sun a physical or chemical?
Physical. It is still crayon, and the change can be undone by cooling it until it hardens.
Side walk is warmed by the heat of the sun physical or chemical?
The sidewalk being warmed by the heat of the sun is a physical process. The sun's rays transfer heat energy to the sidewalk through radiation, causing the molecules in the sidewalk to vibrate more rapidly and increase in temperature. This is a physical change as no new substances are being formed in this process.
When a glass of water is left out in the sun the water gradually disappear is it chemical change?
Any change of state (solid to liquid, liquid to gas, or the reverse of these) is a physical change.You still have the stuff you started with (water to steam for example).A chemical change will result in totally different compounds (sugar burning will form carbon, carbon dioxide and water for example).
Is sun burning chemical change?
No. It is a nuclear change.
The chemical change of the sun's energy into glucose and oxygen?
Yea Photosynthesis is the chemical change in plants that uses the sun's energy and converts it into glucose and oxygen.
Is it a chemical change when the sun melts a cryon?
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.
Is a grape drying in the sun a chemical or physical change?
It is a chemical change. Fermentation causes bonds to break within a compound and new bonds form thus chemically changing the initial 'reactant'.
The chemical change of the sun's energy into glucose and oxygen-?
Photosynthesis is the chemical change of the suns energy into glucose and oxygen.
What is the chemical change of the sun's energy into glucose and oxygen?
This chemical reaction is called photosynthesis.
Is warming up in the sun a physical or chemical change?
It is a chemical change, because the sun converts hydrogen into helium to create heat and light.
When a chocolate bar melts in the sun a physical or chemical change?
When a chocolate bar melts in the sun, it is a physical change. This is because the chocolate undergoes a phase change from a solid to a liquid without changing its chemical composition.
Is sunburn a chemical change?
No, sunburn is a physical change rather than a chemical change. It involves damage to the skin from overexposure to ultraviolet radiation from the sun, rather than a change in the chemical composition of the skin.
What is the chemical change of exposing ice in the sun?
Melting is a physical process.
Is the crayon melting in the sun is physical or chemical change?
The crayon melting in the sun is a physical change because only its state changes from solid to liquid without forming any new substances.
is a crayan melting in the sun a chemical change?
no it is still thr same
