1					2							3					4
				5
				6
7													8
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11								12						13
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	15															16
17																		18
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20
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										23

Across 5. A mixture that appears to be the same throughout. 6. Metal capable of being shaped by hammering or by pressure from rollers. 8. Having extremely high resistance to the flow of charge through them. 11. Have properties of both metals and nonmetals 14. The smallest particle in a chemical element or compound that has the chemical properties of that element or compound 17. An organizational system for elements. 19. Material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this 20. Positively charged particles that help make up the nucleus of the atom. They are equal to the electrons and atomic number of the atom. 22. The number of protons in the nucleus of an atom 23. Not able to conduct electricity or heat very well.

Down 1. One or two letter abbreviation derived from the element’s English or Latin name. 2. Any number of chemical elements, such as iron or copper, that are often ductile solids and good conductors of heat and electricity. 3. Two or more substances that are not chemically combined with each other and can be separated by physical means. The substances in the mixture retain their individual properties. 4. A mixture that does not appear to be the same throughout. 7. Simplest form of pure substance. They cannot be broken into anything else by physical or chemical means. 9. Columns from top to bottom in the periodic table 10. Metal capable of being drawn out into thin threads 12. The degree of compactness of a substance. 13. Pure substances that are the unions of two or more elements. They can be broken into simpler substances by chemical means. 15. Neutral particles; have no electric charge and help make up the nucleus of the atom. They contribute to the atomic mass. 16. Negatively charged particles found outside the nucleus in electron orbits/levels and are equal to the number of protons. They are involved in the formation of chemical bonds. 18. The mass of a given atom or molecule. Number of protons and neutrons added together. 21. Smallest possible unit into which matter can be divided, while still maintaining its properties