Need answers asap! will give brainliest : d 17) circle all of the chemical changes: bend dissolve react tarnish melt combust evaporate 18) circle all of the physical changes: rus, t burn, decompose ,boil ,tarnish dissolve ,break . bake , cut 19) put the following in order from least movement to most movement of particles: solid, liquid, gas

17) bend dissolve react tarnish melt combust evaporate

The underlined words indicate chemical changes: the substance has changed into something with a different composition.

The other words represent physical changes: the substance changes its form but not its composition.

19) rust burn decompose boil tarnish dissolve break bake cut

The underlined words indicate physical changes. The other words represent chemical changes

18) solid < liquid < gas

The particles of a solid are fixed in place. Those in a liquid can slide past each other. Gas particles can move around the vulome of their container,

a graduated cylinder.

explanation:

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.