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Chemistry elements mixtures compounds

  1. Element
    A substance made up of one type of atom
  2. Molecule
    made up of two or more atoms chemically joined together
  3. Compounds
    Made up of two or more atoms chemically joined together.
  4. Atom
    Smallest part of an element but still retains the properties
  5. Atomic number
    The number of protons of the elements
  6. Mass number
    Total number of protons and neutrons of that element
  7. Isotope
    Has the same number of protons but different number of neutrons
  8. Groups
    Vertical columns
  9. Periods
    Horizontal rows
  10. Alkali metal
    • Group 1
    • have one electron in their outer shell and are very reactive
  11. Alkaline earth metals
    • Group 2
    • Have two electrons in their outer shell and are reactive
  12. Halogens
    • Group 7
    • Have seven electrons in their outer shell and are quite unreactive
  13. The noble gases
    • Group 8
    • Have 8 electrons in their outer shell and are very unreactive
  14. Ionic bonds
    When one atom gains electrons and another atom loses electrons
  15. An ionic bond
    force of attraction between oppositely charged atoms
  16. Ion
    Charged atom
  17. Covalent bond
    Occurs when atoms share electrons
  18. Alloy
    A mixture of metals
  19. Rusting
    Corrosion of metals
  20. Fuel
    A substance that burns in oxygen and produces heat
  21. Fossil Fuels
    Formed from the remains of dead plants and animals over millions of years
  22. Hydrocarbons
    Compounds which are made up of hydrogen and carbon
  23. Alkali substances
    Bases the dissolve in water
  24. PH scale
    Tells the acidity or basicity of a substance and goes from the ph 0-14
  25. Catalyst
    Speeds up a chemical reaction without being used up in the reaction
  26. Chlorination
    The adding of chlorine to water which kills bacteria
  27. Fluoridation
    The adding of fluorine to water to help prevent tooth decay
  28. Electrolysis
    The splitting of water (compound) by passing electricity through it
  29. Meniscus
    Curved surface of water in a container
  30. Hard water
    Does not lather easily with soap
  31. Soft water
    Lathers easily with soap
Author
cat126
ID
340470
Card Set
Chemistry elements mixtures compounds
Description
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