Design a test to determine whether thorium-234 also emits particles. First, explain how Rutherford’s experiment measured positive particles aimed at the gold foil. Then, explain a test that might detect whether particles are emitted from thorium-234. Last, explain why it would be more difficult to detect the release of neutrons than protons.

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

the answer is na (sodium)

the dissolution of polymer can be thermodynamically described in 2 steps.