No actually it isn't. Breaking a bone is a physical change. Think about it. Are you changing it into a different substance. No you're not, so it's a physical change.
No because there is no change in the identity of the rock, instead of being rock solid, it is powder rock solid.
Also there is no evidence of a chemical reaction.
no it is not
chemical
No it is not, as the ice will still retain its chemical properties. This is an example of a physical change. Remember that the indicators of a chemical change are a change in colour, a change in odour, a change in temperature, the formation of a precipitate, or a gas being given off.
Crushing an aspirin is a physical change because the small pieces are still chemically the same as the aspirin tablet.
breaking up and grinding food particles into small pieces using the teeth
To break into small pieces is to pulverize. If the substance is broken down far enough it will become powdered.
Small pieces of rock from old broken up comets become asteroids. Asteroids are large moving masses that can break up into smaller pieces. They break up and form meteorites.
Yes, there was. A big piece was changed into a number of small pieces.
No it is not, as the ice will still retain its chemical properties. This is an example of a physical change. Remember that the indicators of a chemical change are a change in colour, a change in odour, a change in temperature, the formation of a precipitate, or a gas being given off.
burning of wood is a chemical change as it produces heat and cutting it into small pieces is a physical change as there is a change in shape and size.
This is FALSE ! Because you only broke it in pieces and tearing or breaking into pieces is a PHYSICAL CHANGE not a chemical change. ---------------------------- I also consider that breaking graphite is only a physical change. - - - - --------------------- It's true, you break chemical bonds when you break pieces of graphite. Graphite is a macromolecule: it is found in sheets, and within the sheets each carbon atom is bonded to four other carbon atoms. The only way you could possibly get it apart is to break the bonds between atoms.
When you crush a piece of chalk you get lots of small pieces of chalk.It is only a physical change. It is not a chemical change.
breaking up and grinding food particles into small pieces using the teeth
Crushing an aspirin is a physical change because the small pieces are still chemically the same as the aspirin tablet.
Seddiment
breaking up and grinding food particles into small pieces using the teeth
In most cases yes.
The process of Weathering is when a rock is broken down into small pieces
Ash is made out of small broken pieces of tephra.