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| 6. |
METALS Any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium and francium, whose hydroxides are alkalis. |
| 8. |
A light, ductile, silver-white, metallic elements that burns with a dazzling white light. |
| 9. |
Chloride + __________ = salt. |
| 11. |
An elementary particle with no charge. |
| 13. |
A heavy, silver-white , highly, toxic metallic element, the only that is liquid at room temperature. |
| 15. |
A precious yellow metallic element, highly malleable and ductile. |
| 16. |
GASES Any of the chemically inert gaseous elements including helium, neon, argon, krypton, xenon and radium. |
| 17. |
SHELL A grouping of electrons surrounding the nucleus of an atom. |
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| 1. |
Used in pool water. |
| 2. |
Has an atomic number of three. |
| 3. |
One of two elements that are radioactive. |
| 4. |
An element when put in food products, makes bones and teeth strong. |
| 5. |
An element that does not belong to any group of the Periodic Table. |
| 7. |
An elementary particle with a positive charge. |
| 10. |
The result of the combination of two oxygen atoms. |
| 12. |
TEMPERATURE A comfortable temperature range indoors, usually considered to be 20-25 Degrees Celsius. |
| 14. |
A malleable, ductile, metallic element that is a reddish-brown colour |
| 18. |
The positively charged mass within an atom, made up of neutrons and protons. |
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