1. The law of conservation of mass tells us, in part, that matter is neither created nor destroyed. How can we see this by using chemical reactions? A. By measuring the mass of the reactants and products in a closed system B. By writing a balanced chemical equation C. By counting the number of atoms on each side of the equation D. All of the above

answer: strength i guess

explanation:

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

gas and liquid

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.