Lightning is a physical change not a chemical change. Other things that are physical changes are breaking a bottle and melting ice.
Yes, lightening is a chemical process. Just add bleach to your wash, and see your clothes lighten. If you possibly meant, "lightning", no -- it's a physical process, but it does generate chemical changes.
No, the process of ice melting at 0 degrees Celsius is a physical change, not a chemical property. It involves a phase change from a solid to a liquid state without any change in the chemical composition of the ice.
Scrubbing the floor is a physical change because the appearance or state of the floor is altered without changing the chemical composition of the materials involved.
It depends. In most cases, it is a chemical change as the different colored species have different chemical structures. However, it is possible to change color by very finely dividing particles of matter and this is a physical change.
It can be. Temperature increases usually induce physical changes in the broad sense. If the change in temperature merely induces a state change (for instance, the copper is melted - becoming a liquid) then it is purely a physical change. Presuming that heating will occur in the presence of air, it will also increase the rate of oxidation and, therefore, be indirectly inducing a chemical change.
chemical
It is a chemical change; burning (combustion) is a chemical process.
Lightning flashing across the sky is a physical change. It results from the movement of electrical charges in the atmosphere, without any changes in the chemical composition of the air or the resulting light.
lightning is a match physical
The tree being struck by lightning is a chemical change because it involves a transfer of energy that can cause chemical reactions in the tree, such as burning or decomposition. This changes the tree's composition and cannot be easily reversed.
The lightning of a bulb is a physical change because the transformation is reversible - the electricity passing through the filament causes it to heat up and emit light, but the filament itself remains the same material. A chemical change, on the other hand, involves a change in the chemical composition of the substance, which does not occur in this case.
A physical change
Physical change of the paint, not the door.
Thunder is a physical phenomenon that occurs when lightning heats the air rapidly, causing it to expand and create a shockwave. It is not a chemical change because the composition of the air molecules remains the same before and after the thunder occurs.
it is a chemical change
An acid is a chemical compound, not a physical or chemical change.
It is a physical change.Density is not a chemical property. Instead, it is a physical property.