No it is not a Chemical Change. It is a Physical Change.
It isn't. Separating sand from gravel is a physical change as none of the substances change their identity.
It is a physical change because the chemical composition id not affected.
It's Physical your just separating your not mixing chemicals and what not(:
no... physical
It's a physical change
Gravel and sand are broken rocks.
No, it's a physical change because you can still separate the two from each other.
No, separating sand from water is a physical process as the chemical identities of the sand and water remain the same.
No. It's a physical reaction.
If we need to separate sand and gravel, we simply use the size of the material and a mechanical contraption to do the separating. A screen with mesh of the proper or appropriate dimensions will sieve the particles nicely. The sand will fall through the mesh piling up underneath it, and, if the screen is tilted, the gravel will bounce its way down and off the screen into a separate pile.
No. Sand and gravel are two different terms for describing sediment size. Gravel is a size up from sand.
Separations of mixtures would be a physical change because you are not changing the chemical make-up of the mixture. Instead, you are simply sorting parts of the mixture. For example, taking out all of the blue blocks in a bag full of red, yellow, green, and blue blocks would be an example of a physical change and separating a mixture.
no.