bklyn_nerd22 Posted June 3, 2007 Posted June 3, 2007 Hi guys? i need help with my scavenger hunt for chem class, its 50 questions, and the items i need to find cant be illegal or dangerous, and you cannot duplicate...please help me! i already have most of these, but just need to verify and get the rest...thanks! 1.Hetrogeneous Mixture 2. Homogenous Mixture 3. An Alloy 4. A 5 ml satured solution of an ionic compound (show all work) 5. pure element 6. picutre of an excited atom ( i got this) 7. a metallic element 8. nonmetallic element 9. a metalloid 10. .300 moles of sodium bicarbonate (show work) 11. an element with +2 and +3 Oxidation states 12. A Pure substance 13. A compound 14. A Hydrate 15. a covalent compound 16. silicon dioxide (where do i find these))!? 17. a homogenous substance that is 42.1 % C, 6.42 % H, and 51. 4 % O 18. the insoluble product that forms from mixing sodium carbonate with calcim chloride when both are (aq) 19. an oxide of a transitional metal 20. a substance containing methyl salicylate 21. the amount of water whose temp would change by 15 C when its absorbed 150 joules of heat energy (show work) 22. substance with density of 8230 KG/M3 (to the third power) 23. a subtance formed from reacting silver chloride and zinc 24. a 0.00044643 Mol Sample of a gas (show work) 25.a substance that lowers the freezing point of water And if you guys dont mind, help my partner as well, but its not as important, with these: an endothermic change an exothermic change a hydrocarbon with a molecular mass more than 100G/mol an isomer of 1-propanol a synthetic polymer a natural polymer an arrhenius acid an arrhenius base a bronsted lowery base a physical equilibrium system containing two phases a chemical equilibrium system containing two or more phases a binary covalent compound a substance that can be used as a reactant in the fermentation reaction a diatomic molecule two substances that could be used as the electrodes in a voltaic cell a substance produced by a redox reaction. Thanks so much!!
fattyjwoods Posted June 4, 2007 Posted June 4, 2007 what do you mean by 7. ? if its any you gan just do barium or aluminium
fattyjwoods Posted June 4, 2007 Posted June 4, 2007 for 8 could be carbon or hydrogen. they arent metallic. neither is halogen
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