chemistry

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Across
  1. 5. changethatresultswhentwoormoresubstancereacttocreateadifferentsubstanceorsubstances;thenewsubstanceshavecompletelydifferentpropertiesfromtheoriginalones
  2. 7. numberofprotonsinthenucleusofoneatomofanelement
  3. 8. measureofatomicmass;1amuisequalto1/12themassofacarbon12atom
  4. 9. chemicalreactionthatoccurswhenoxygenreactswithasubstancetoformanewsubstanceandgiveoffenergy
  5. 10. chemicalreactionthattakesplaceincellsfood(sugar)reactswithoxygentoproduceenergywaterandcarbondioxide
  6. 12. chemicalcombinationoftwoormoreelementsinaspecifccratio
  7. 16. substancethathelpsachemicalreactiontoproceedmorequickly
  8. 17. abilityofasubstancetoconductelectricityorheat
  9. 18. principlethatmatterisnotcreatedordestroyedinachemicalreactionthemassoftheproductsalwaysequalsthemassofthereactants
  10. 22. anexperimentinwhichallreactantsandallproductsofachemicalreactionareaccountedfor
  11. 23. earthmetalsgroup2elementsintheperiodictable;theirreactivityisnotasstrongasthatofthealkalimetals
  12. 25. descriptionofhowasubstanceinteractswithothersubstances,suchasacids;chemicalpropertiesareobservableonlywhenachemicalchangeoccurs
Down
  1. 1. changeofstatefromagastoaliquid
  2. 2. massofoneatomofanelementcalculatedfromthetotalnumberofprotons,neutrons,andelectronsofthatatom;measuredinatomicmassunits
  3. 3. catalystinvolvedinchemicalreactionsinlivingthings
  4. 4. slowchemicalchangethatoccurswhenoxygenintheairreactswithametal
  5. 5. combinationofsymbolsthatrepresentacompound;theformulaidentifiestheelementsinthecompoundandtheamountofeachelement
  6. 6. of a solid that can be stretchedintoalongwire
  7. 11. reactionthatreleasesenergy
  8. 13. asolutioninwhichwateristhesolvent
  9. 14. changeofstatefromaliquidtoagas
  10. 15. areactionthattakesplacewhentwoormoresubstancesreacttoformnewsubstances
  11. 19. group1elementsintheperiodictable,notincludinghydrogen;themostreactiveofthemetals
  12. 20. cloudymixtureinwhichtinyparticlesofonesubstanceareheldwithinanotherandparticlescannotbeseparatedoutfromtheothersubstance
  13. 21. thesmallestpartofanelementthatisrepresentativeofthatelement;aneutralparticlemadeupofanucleuscontainingprotonsandneutrons,andinwhichthenumberofelectronsequalsthenumberofprotons
  14. 24. changeofstatefromaliquidtoasolid