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List four observations that suggest chemical change is occurring
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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.
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In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above
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List four observations that suggest chemical change is occurring...
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