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- 1. Multiple ChoiceHow many elements are in C6H12O6?1234
- 2. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 3. Multiple ChoiceHow many atoms are there TOTAL in:
H2SO46573 - 4. Multiple Choice
The red numbers in the image below represent ________subscriptscoefficientsI don't know, and don't want to tryNone of the answers are correct - 5. Multiple ChoiceThe blue numbers in the image below represent ________I don't know, and don't want to trycoefficientssubscriptsnone of the answers are correct
- 6. Multiple ChoiceThe substances at the beginning of a chemical equation are called the ____productyieldchemical symbolreactants
- 7. Multiple ChoiceIn the equation, 2Mg + O2 ---> 2MgO, which are the reactants?Mg and OMgOMg and MgOO and MgO
- 8. Multiple ChoiceHow many O's are in Al₂(SO₄)₃412724
- 9. Multiple ChoiceNumber of H in 3(NH₄)₂CrO₄42824
- 10. Multiple ChoiceWhat does the Law of Conservation of Mass state?Matter cannot be gained or lost in a chemical reaction.Matter can only be lost in a chemical reaction.Matter can only be gained in a chemical reaction.Matter can be gained and lost in a chemical reaction.
- 11. Multiple Choice
What is the right part of a chemical equation called...
H2 + O2 --> H2O
Reactants
Products
Yields
Chemical Equation
- 12. Multiple Choice
What is the arrow in a chemical equation...
H2 + O2 --> H2O
Reactants
Products
Yields
Chemical Equation
- 13. Multiple ChoiceBalance this equation...
HgO --> 2Hg + O2It is balanced2HgO --> Hg + O22HgO --> 2Hg + O2I don't know...Oh well! - 14. Multiple ChoiceBalance this equation...
Sb2S3 + O2 --> Sb + SO2It is balancedSb2S3 + 3O2 --> 2Sb + 3SO2Sb2S3 + O2 --> 2Sb + SO2I don't know...Oh well! - 15. Multiple ChoiceWhich of the following is an unbalanced equation?CaCO3 --> CaO + CO2PbO2 + 2H2-->2Pb + H2O2Na+ 2H2O-->2NaOH + H2CS2 + 2O2 --> CO2 + 2SO2
- 16. Multiple ChoiceWhen balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balancedchargesubscriptrandom numbercoefficient
- 17. Multiple ChoiceWhich of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O34Fe + 3O2 -> 2Fe2O32 Fe + 3O2 -> Fe2O64 Fe + O6 -> 2Fe2O3None of the options are correctly balanced. - 18. Multiple ChoiceIs this equation balanced?yesnoNot enough information
- 19. Multiple ChoiceA sealed test tube containing 8 grams of iron filings and 5 grams of sulfur is heated until the material in the test tube glows bright red. What is the mass of products?Mass is less than 13 gramsMass is equal to 13 gramsMass is greater than 13 gramsMass cannot be measured
- 20. Multiple Choice
Balance this equation:
H2 + Cl2 ---> HCl
It is balanced.
H2 + Cl2 ---> 2HCl
3H2 + Cl2 ---> 6HCl
H2 + 3Cl2 ---> 6HCl
- 21. Multiple ChoiceWhich number should go in the blank?
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO31230 - 22. Multiple ChoiceWhich number should go in the blank?
Mn + _ HNO3 → Mn(NO3)2 + H21230 - 23. Multiple Choice
Balancing this Equation,
____ Fe + ____ Cl2 → ____ FeCl3
1, 2 → 2
2, 2 → 2
2, 3 → 2
3, 3 → 2
- Answer choicesTagsAnswer choicesTags