Across
- 3. theory, The body of theory which explains the the physical properties of matter.
- 5. A stable subatomic particle found in all atoms.
- 7. A set of elements occupying a column in the periodic table.
- 8. A substance that cannot be broken down into any other substance.
- 9. Tiny things matter is made up of.
- 11. The property of matter and radiation which is manifest as a capacity to perform work .
- 12. A stable subatomic particle occurring in all atomic nucleus.
- 13. ,Anything that has mass and takes up space.
- 15. An element or substance that is not a metal.
- 18. Smallest unit of ordinary matter that forms chemical element.
- 20. A metal made by combining two or more metallic elements.
- 21. metal, They are very reactive metals forming strongly alkaline hydroxides.
- 23. A group of atoms bonded together.
- 24. A thing that is composed of two or more separate elements.
- 25. An element whose properties are either metals and solid non-metals or semiconductors.
- 29. A chemical notation of one or two letters representing a chemical element.
Down
- 1. A set of elements occupying a horizontal row in the periodic table.
- 2. Tiny particle found in the center of the atom along with the proton.
- 4. The singular of nuclei.
- 6. The amount of a substance in a defined space.
- 10. number, Another name for atomic number.
- 14. table, A tab arranged by increasing atomic number.
- 16. , Reactive non-metallic elements that form strongly acidic compound.
- 17. The movement of a solvent.
- 19. number, The total number of protons and neutrons in a nucleus.
- 22. earth, Any of the elements occupying Group IIA (2) of the periodic table.
- 25. A solid material which is typically hard and shiny.
- 26. number, The number of protons in the nucleus of an atom.
- 27. The act of spreading or allowing to spread freely.
- 28. atomic, Smaller than or occurring within an atom.