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Science Vocabulary #11 - Modified

Across
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge.
Anything that has mass and takes up space.
A Particle that has no electric charge and is located in an atom’s nucleus.
Down
A substance that is formed when two or more different elements combine chemically.
A pure substance that cannot be broken down into a simpler substance by ordinary chemical changes; an element consisting of one type of atom.
The smallest particle of an element that has the properties of that element.