Atoms Crossword Puzzle

QUESTIONS LIST: subtraction: the process of removing one number from another, nucleus: the central part of an atom, usually made of protons and neutrons, atomic mass: the mass of specific isotope of a particular chemical element, expressed in atomic mass units, scale: the relation between the real size of something and its size on a map, model, or diagram, neutron: a neutrally charged particle found in the nucleus, probability: the level of possibility of something happening or being true, average: the result of adding two or more amounts together and dividing by the total number of amounts, electron: an extremely small piece of matter with a negative electric charge, percentage: an amount of something, often expressed as an amount out of 100, scientific notation: a way of writing a very small or large number by multiplying power of 10 and a number between 1 and 10, atoms: the smallest unit of any chemical element, proton: a positively charge type of particle found in the nucleus, radioactive decay: the process of producing powerful energy from the breakdown of elements