Across
- 2. - The vertical columns of elements are called
- 3. - containing more than two atoms
- 5. - any of two or more forms of a chemical element, having the samenumber of protons in the nucleus, or the same atomic number, buthaving different numbers of neutrons in the nucleus, or different atomicweights.
- 8. - easily set on fire
- 9. - any of the chemically inert gaseous elements of group 8A or 0 of theperiodic table
- 12. – positively charged ions
- 14. - quality of something that can be shaped into something else without breaking
- 15. - a colorless volatile flammable liquid (formula C2H5OH)
- 17. - substance formed when two or more chemical elements are chemically bonded together.
- 20. – regulated substance that makes dyes and fuel for transports (formula C6H6)
- 21. – the tendency to gain or lose electrons called
- 23. – compound that dissolves in a water to form a solution a pH greater than 7
- 25. – horizontal row in a periodical table
- 26. - negatively charged ions
Down
- 1. – the elements in group 17
- 4. – number of protons
- 6. - the quality or property of being soluble; relative capability of being dissolved
- 7. - a very small particle of matter that has a negative charge of electricity and that travels around the nucleus of an atom (discovered by Joseph John Thomson)
- 10. – compound that dissolves in a water to form a solution with pH lower than 7
- 11. - s air, the stuff we breathe, the thing that makes our lives possible. It is an element, a basic chemical found on the earth.
- 13. – The most popular element in a first group and first period of periodic table
- 14. – Combination of pure substances neutron
- 16. – element in a first group and third period in a periodical table
- 18. - soft heavy grey metal that melts easily and ispoisonous,. It is a chemicalelement: symbol Pb
- 19. – has the most of the elements, good conductors of electricity and heat.
- 22. The element found in group 14 period 2 is?
- 24. – second name for vertical colums of elements
- 25. - a very small particle of matter that is part of the nucleus of an atom and that has a positive electrical charge.
- 27. - an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons