Across
- 1. a column of elements in the periodic table, also called a family
- 9. are experts in chemistry
- 12. a one or two letter abbreviation for a specific element
- 13. can be rolled
- 15. the father of modern chemistry
- 18. a measure of how easily an element will bond with other elements to form compounds
- 20. a substance (such as gold, tin, or copper) that usually has a shiny appearance, is a good conductor of electricity and heat, can be melted, and is usually capable of being shaped.
- 21. one of the starting substances in a chemical reaction, which may be changed during the course of the reaction. They are written on the left side of chemical equations.
- 23. a positively charged particle
- 24. a row of elements on a periodic table
- 25. have properties of both metals and nonmetals, Some are semiconductors.
Down
- 2. One of the substances made during a chemical reaction, They are written on the right side of chemical equations
- 3. a negatively charged particle
- 4. Elements which do not exhibit metallic properties
- 5. A substance composed of 2 or more elements or compounds that are not chemically combined, cannot be separated
- 6. were the first chemists
- 7. the unit of measurement for subatomic particles
- 8. can be stretched
- 10. A substance composed of 2 or more elements that are chemically combined together, can be separated
- 11. the small number after an individual element’s symbol in a chemical formula. It shows how many atoms of that element are present in the compound.
- 14. the temperature where a substance changes from a solid to a liquid
- 16. the center of an atom, containing protons and neutrons.
- 17. a substance that cannot be broken down into a simpler substance
- 19. a slow reaction between air and metal
- 22. the smallest particle of an element which can exist by itself