Which of the following are forms that chemical hazards can be in

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

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

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.