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QR Challenge: Ms. Chee Wah Physical Science Chemistry

QuestionAnswer
1. How many atoms of carbon (C) are in C6H12O6?6
2. Which of the following shows the correct way to balance the chemical equation? Fe + O2 -> Fe2O32 Fe + 3O2 -> Fe2O6
3.Balance this equation: HgO --> Hg + O22HgO --> Hg + O2
Mg + __HCl ---> MgCl2 + H22
5. Balance this equation._CF4 + _Br2 -- _CBr4 + _F21,2,1,2
6. Balance this equation _Al +_HCl --> _H2 +_AlCl32, 6, 3, 2
7. What is the formula for Lithium fluoride?LiF
8. What is the formula for Beryllium sulfide?BeS
9. Name the compound BBr3?boron tribromide
10. Name the compound AlF3.Aluminum fluoride
11. Name the compound N2O3.dinitrogen trioxide
12. What is the formula for Tetraphosphorous Pentachloride?P4Cl5
13. Name the compound CP.carbon monophosphide
14. What type of chemical reaction is: 4Si + S8 --> 2Si2S4?synthesis
15. What type of chemical reaction is: 3Ca + 2AlCl3 --> 3CaCl2 + 2Al?single displacement
16. What type of chemical reaction is: 3KOH + H3PO4 --> K3PO4 + 3H2O?double displacement
17. What type of chemical reaction is: 2NO2 --> N2 + 2O2decomposition
18. Which chemical reaction breaks down into 2 substances?decomposition
19. A + B = ABsynthesis
20. Which chemical reaction switches 2 elements?double replacement
21. A + BC = B + ACsingle displacement
22. What kind of bond forms when an atom give away an electron?ionic bond
23. When a nonmetal gains electrons, it becomes this type of ion?anion
24. All elements in group 1 have what type of ion?1+
25.What kind of bond forms when atoms share electrons?covalent bond

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