Describe the difference between physical and chemical changes in terms of what happens to the particles

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant