The water is merely going from a liquid state to a gas state. Its chemical identity remains the same.
Clothes being ironed is a physical change because there is no change in the chemical composition of the clothes.
yes
Lighting a match.
Drying clothes would be a physical change. The clothes themselves do not change either chemically or physically, so one needs to consider the removal or liquid water from the clothes. This is simply a phase change of H2O liquid to H2O vapor (steam). It is still H2O either way, so there is no chemical change. It would be a physical change.
The answer is lighting a match box because when doing so, the match goes into flames and flammability is a chemical change. When cutting a snowflake, the substances do not change, neither does it change when drying wet clothes. The person earlier said drying wet clothes, but he/she is wrong because when you dry wet clothes, the water goes through a physical change called evaporation, which is NOT a chemical change. I hope this helps. Good luck on your chapter assessments(I'm doing mine too). :)
No, drying of fish is a physical change, not a chemical change. The process of drying simply involves the removal of water from the fish, causing it to undergo a physical transformation, but its chemical composition remains the same.
It's a physical change because when blow drying your hair, no new substance is made it just changed its form/appearance; from wet to dry. Therefore, it's a physical change.
Yes, drying wet clothes is a physical change because the water in the clothes evaporates when exposed to heat, but the clothes themselves remain the same chemically.
Lighting a match.
Drying clothes would be a physical change. The clothes themselves do not change either chemically or physically, so one needs to consider the removal or liquid water from the clothes. This is simply a phase change of H2O liquid to H2O vapor (steam). It is still H2O either way, so there is no chemical change. It would be a physical change.
Ignition of a match is a chemical process.
Physical change. The water on the road evaporates, which is a physical change.
The answer is lighting a match box because when doing so, the match goes into flames and flammability is a chemical change. When cutting a snowflake, the substances do not change, neither does it change when drying wet clothes. The person earlier said drying wet clothes, but he/she is wrong because when you dry wet clothes, the water goes through a physical change called evaporation, which is NOT a chemical change. I hope this helps. Good luck on your chapter assessments(I'm doing mine too). :)
It's a physical change because when blow drying your hair, no new substance is made it just changed its form/appearance; from wet to dry. Therefore, it's a physical change.
No, drying of fish is a physical change, not a chemical change. The process of drying simply involves the removal of water from the fish, causing it to undergo a physical transformation, but its chemical composition remains the same.
Clothes drying on a line is a process known as "evaporation." This is when water molecules in the wet clothes gain enough energy from the sun and wind to change into a gas (water vapor) and disperse into the atmosphere.
lighting a match from a matchbox is a chemical change.
drying them
The coefficient of drying is a number about the utility of a dryer. A simple example : You have dirty clothes dry, and you wash them. So now, you have a totally of 4kg wet clothes and you put them on the dryer. The coefficient of drying K come from this formula : K = Weight of wet clothes / Weight of dry clothes So it depends from the speed of your dryer!