Question

i know this is math but no one is in chem...PLEASE HELP WILL MEDAL AND FAN!!!

Pure substances and mixtures are different because mixtures:

always have exactly the same composition

have exact melting points

retain the properties of the constituents in the mixture

cannot be separated into their components by physical means

Answer 1

i dont know anyone in chem :(

Answer 2

pure substances contain only one particular substance hence pure, like pure water. a mixture is a composition of different substances.

Answer 3

The last one

Answer 4

but first let me ask you would pure substances and mixtures have the same melting point?

Answer 5

This is the definition of mixture: Mixtures are physically combined structures that can be separated into their original components

Answer 6

no? @Photon336

Answer 7

@rhondasommer yes. the best answer would be the last one but here's why. we can separate a pure mixture if it's a compound but we can't separate a pure substance by physical means such as separation techniques. we need somehow either A break the bonds between the atoms to do that. A mixture we can separate it by physical means. think about say sand and water we could separate that by physical means.

Answer 8

thank you!