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Is cold water heating up to its boiling point a chemical change?
No, the process of cold water heating up to its boiling point is a physical change rather than a chemical change. This is because the molecules in water remain the same during the transition from liquid to gas; only their arrangement and energy levels change.
Is salt water drying up a physical or chemical change?
The evaporation of salt water is a physical change because it does not alter the chemical composition of the water or salt. The water is simply changing from a liquid to a gas, leaving the salt behind.
Does volume density or mass change when water is frozen then heated?
The density of water changes at different temperatures. As temperature goes up, density goes down.
Is heating pasta a chemical or physical change?
No. Unlike most other cooking methods, boiling pasta is basically just getting it wet. Any time you see a color change or a phase change (between gas, liquid, or solid), you've seen a chemical change (although not necessarily a reaction in the case of a phase change).
When an object or solution changes appearance is it a chemical change?
Not necessarily. When ice melts into water, its appearance changes, since ice is a solid and water is a liquid, but that's a physical change. Both water and ice are H2O, so the chemical composition does not change, making it a physical change and not a chemical change. However, when iron reacts with oxygen to produce rust, its appearance also changes. You end up with iron oxide (a.k.a. rust) which has a different chemical composition than just iron and just oxygen. That's a chemical change. If you end up with something new that you didn't have before, it's a chemical change.
Is water being heated up a chemical change?
yes
Is sunlight speeding up the evaporation of a bowl of water a chemical change?
No, sunlight speeding up the evaporation of water is not a chemical change. It is a physical process where the water molecules transition from liquid to vapor state without any change in their chemical composition.
Is cold water heating up to its boiling point a chemical change?
No, the process of cold water heating up to its boiling point is a physical change rather than a chemical change. This is because the molecules in water remain the same during the transition from liquid to gas; only their arrangement and energy levels change.
Is breaking water up into oxygen and a hydrogen gas a physical or chemical change?
Breaking water into the component parts of hydrogen and oxygen is a CHEMICAL change.
Is it a chemical or physical change when a scientist break-up water into oxygen and hydrogen gas?
Breaking up water into oxygen and hydrogen gas is a chemical change because the chemical composition of water (H2O) is altered to form new substances (O2 and H2). This process involves the breaking and formation of chemical bonds.
What do water molecules do when they are heated?
up because when heated, it becomes light and goes up.
When you heat up water and it changes to steam is it a physical or chemical change?
physical change because you are not doing anything to the object to change its ingredients or the way it is constructed and all you are really doing is adding heat.
What can a chemical change be speeded up by?
A chemical change can be speeded up by a catalyst
What speeds a chemical change up?
catalyst speeds up chemical change
Is salt water drying up a physical or chemical change?
The evaporation of salt water is a physical change because it does not alter the chemical composition of the water or salt. The water is simply changing from a liquid to a gas, leaving the salt behind.
Is H2o a chemical change?
H2O is the compound water. Forming it from other things would be a chemical change. Using it to react with other substances and form new substances would also be a chemical change. But water just sitting there is not a chemical change. EX: hydrogen(gas) + oxygen(gas) forms water (chemical change) Water + sodium forms sodium hydroxide and hydrogen (gas) (chemical change) BUT water + sugar makes a sugar water solution (not a chemical change) nothing new was made, the sugar just dissolved and the water is still water
What happens to chemical change during a chemical change?
when a chemical change occurs, chemical bonds are broken up
