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science facts (chemistry (periodic table (it was first put together by…

- - - - the reactivity series goes like this: Potassium K, Sodium Na, Calcium Ca, Magnesium Mg, Aluminium, (carbon C), Zinc Zn, Iron Fe, Lead Pb, (hydrogen H), Copper Cu, Silver Ag, Gold Au. the very reactive ones are K - Ca, the fairly reactive ones are Mg - Zn, the not very reactive ones are Fe - Cu, the not at all reactive ones are Ag & Au
    - - they're malleable, most metals have high melting and boiling points, metals have high densities, some metals are magnetic (Iron, nickel & cobalt), metals conduct energy
- - - - have high and low points called troughs and crests
      - undulations (up and down movements)
    - - travels in longitudinal waves
      - sound can be reflected or absorbed
      - speed of sound depends what it's passing through. It travels faster through solids then water then air
      - Cannot travel in a vacuum like space
      - Slower than speed of light