What are the three steps scientist take to evaluate a scientific explanation

The isotope Cesium-137, which has a half-life of 30 years, is a product of nuclear power plants. How long will it take for this isotope to decay to about one-sixteenth its original amount?

Which of these are made up of matter? Check all that apply. A) parts of outer space where there is no air or atoms B) salt dissolved in water C) air in the lower levels of the Earth's atmosphere D) leather made from cowhides E) metal after if has

What else supports the idea that an exothermic reaction has occurred?

If milk was boiling on a gas stove and it boiled over, what color would you expect to see?

What are the sub-particles that make up an atom? (select all that apply) * ?

Researchers discovered a subatomic partial while working with the cathode ray tube the particle is known as

An electrochemical cell is constructed such that on one side a pure nickel electrode is in contact with a solution containing Ni2 + ions at a concentration of 2 * 10-3 M.

The lines in an element's atomic spectrum result from electron spins going in opposite directions. energy that is spread out among an atom's electrons. electrons moving from a lower to a higher energy level.

Is Jesus Christ real?

In an isothermal process, 1.59 moles of an ideal gas is compressed to one-fifth of its initial volume at 285 K. What quantity of heat is added to, or removed from, the system during this process