In testing for rate of reactions, where magnesium and hydrogchloric acid reacts, what is the use of, 1. test tube
2. syringe​

Which states of matter have particles that move independently of one another with very little attraction?

Is 343 in the sequence -5, -2, 1, 4, 7

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.