Which are exmaples of chemical change? •baking cookies

• The statue of liberty's metal tarnishes from copper to green

• cold butter melts into liquid when heated

•salt is dissolved into freshwater

•Food scraps decompose into fertilizer in a compost pile

• frying changes the color and texture of an egg

•ocean water evaporates to water vapor on a hot day

•lighting a match

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.