Matter

1. The three components of each atom.
4. A substance whose smallest particle includes more than one element chemically bonded together.
5. Molecules that are made up of more than one of the same atom.
9. An atom that has gained or lost an electron.
11. Electrons that are the farthest away from the nucleus, have the most energy, and participate in chemical reactions.
13. A section of the periodic table that gives the chemical information of each element.
15. The small particle that orbits the nucleus and carries a negative charge. Responsible for chemical reactions between elements.
16. The large particle at the center of the atom that carries a positive charge. Determines an element’s identity.
17. The part of the atom at the center that contains the majority of the mass.

2. The smallest functioning unit of matter.
3. The variable in an experiment that is being manipulated or changed by the experimenter.
6. Atoms of an element that have the same number of PROTONS, but a different number of NEUTRONS.
7. A group of atoms held together by covalent bonds.
8. The large particle at the center of the atom that carries a neutral charge. Responsible for holding the nucleus together.
10. an orbit followed by electrons around an atom's nucleus.
12. The variable in an experiment that changes because of the independent variable.
14. Everything that takes up space or has mass.