Matter

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Across
  1. 4. Sum of the number of protons and neutrons present in the nucleus of an atom.
  2. 6. An element whose property are intermediate between those of metals and solid non-metals.
  3. 10. A minute portion of matter
  4. 11. The amount of particular substances contained within a solution/mixture or in a particular volume/space.
  5. 15. A substance composed of identical molecules consisting of atoms of two or more chemical elements.
  6. 16. Any elements occupying IA (1) of the periodic table, they are very reactive, monovalent metals that forms strongly alkaline hydroxides.
  7. 17. A notation of one or two letters representing a chemical element.
  8. 19. process by which molecules of a solvent tends to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.
  9. 20. The physical property of matter
  10. 22. A reactive non-metallic elements that forms strongly acidic compounds with hydrogen. Occupying the group of occupying group VIIA (17) of the periodic table.
  11. 26. The smallest particle of a chemical element that can exist.
  12. 29. Stable subatomic particle that has a positive charge .
  13. 30. The number of a specific substance found in nucleus of every atom of an element.
Down
  1. 1. Intermingling of substances by natural movement of their particles
  2. 2. A table of the chemical elements arranged in order of atomic number in rows so that elements with similar atomic structure/ chemical properties appears in vertical columns .
  3. 3. Anything that has moss and occupies space
  4. 5. The universe's fundamental unit of negative charge.
  5. 7. the property of matter and radiation which is manifest as a capacity to perform work.
  6. 8. A solid hard, shiny material with good electrical and thermal conductivity.
  7. 9. A column in the periodic table of chemical elements.
  8. 12. An element or substance which is not metallic.
  9. 13. Number of protons in the nucleus of an atom.
  10. 14. A substance which cannot be decomposed into simpler substances.
  11. 18. A group of two or more atoms that forms the smallest identifiable unit.
  12. 21. Any elements occupying group IIA (2) of the periodic tbale , usually words ending with ium. They are reactive, electropositive, divalent metals.
  13. 23. Metal made by combining two or more metallic elements.
  14. 24. A particle formed in the nucleus of an atom and carries no electric charge.
  15. 25. Smaller than or occurring within an atom.
  16. 27. The row of chemical elements in the periodic table.
  17. 28. The central part of an atom which contains protons and neutron along with having an enormous density of matter .