ethanol?
Yes. If the plastic breaks or melts and dissolves in water it may turn into poison.
The chemical formula for water is H2O. The chemical formula stays the same even if water is in a different state (solid, liquid or gas).
Never, it stays there permanently.
When salt dissolves in water, the amount of salt stays the same. The salt molecules spread out in the water but remain present in the solution. This is a physical change and does not involve the loss or gain of salt molecules.
Liquid particle stays in group
Liquid particle stays in group
No, evaporation of water from a lake is a physical process, not a chemical reaction. It involves the transformation of water from a liquid to a gas without any change in the chemical composition of water molecules.
Unless your radiator has a leak, the radiator fluid stays in the radiator.
In a chemical reaction, the total mass of the substances involved stays constant. This is known as the law of conservation of mass.
When sugar dissolves in water, the sucrose molecules break apart into individual sugar molecules. These individual sugar molecules become surrounded by water molecules, forming a homogeneous mixture called a solution. This process does not change the chemical composition of the sugar, it simply disperses it evenly throughout the water.
When a juice bar melts, it changes from solid to liquid state, but the matter remains the same. The new form is still considered part of the liquid phase, with the same chemical composition as the solid juice bar.
During the phase change, the temperature stays the same.