Two substances were mixed and there was a color change and small flames. what can you infer happened?

a physical property was observed
a chemical change occurred
a change in state from solid to liquid
matter was destroyed

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

chemical properties of thing

e) none of the above answers are correct

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.