How can you cause a physical change?

Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance tochange into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

You can cause a physical change by bending, ripping, melting (and refreezing), folding, breaking, and there are some others. The main deal with physical changes is that the substance isn't formed into something new, that would be a chemical change. 

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Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.