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- 1. Multiple ChoiceWhat is changed in a chemical reaction like this one?
NaOH + HCl → NaCl + H2Othe number of atoms is changedmolecules and compounds are changedatoms are changedelements are changed - 2. Multiple ChoiceWhat coefficient should go in the blank space to balance the chemical equation?
2Al +____ HCl → 2AlCl3 + 3H22436 - 3. Multiple ChoiceIn chemical reactions, what does the principle of conservation of mass mean?Matter is not created or destroyed.The total mass of the reactants is greater than the total mass of the products.The total mass of the reactants is less than the total mass of the products.Matter is not changed.
- 4. Multiple Choice
Identify the reactant(s) and product(s) of the reaction.All three are reactants and none are products.Hydrogen and water are the reactants, and oxygen is the product.Water and oxygen are the reactants, and hydrogen is the product.Hydrogen and oxygen are the reactants, and water is the product. - 5. Multiple ChoiceWhich is the Law of Conservation of Matter?matter cannot be created or destroyed, it only changes formmatter can be created but it cannot be destroyed, it never changes formmatter can be destroyed but it cannot be created, it usually just changes formmatter is an unproven theory created by Hans Geiger
- 6. Multiple Choice
Identify the number in blue.
Product
Reactant
Coefficient
Subscript
- 7. Multiple Choice
What state of matter is this substance?
solid
liquid
gas
aqueous
- 8. Multiple Choice
How many atoms of nitrogen are in the compound shown above?
1
2
3
4
- 9. Multiple ChoiceWhich problem is balanced?
(Check ALL answers)PbO2 + 2H2SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H2 - 10. Multiple ChoiceCxHy +O2 --> H2O + CO2DecompositionDouble replacementCombustionSingle Replacement
- 11. Multiple ChoiceOne reactant into several products.DecompositionSynthesisCombustionSingle Replacement
- 12. Multiple ChoiceWhat is the type of reaction shown at the top?CombinationDecompositionSingle ReplacementDouble Replacement
- 13. Multiple ChoiceThis pictures simulates what type of reaction?SynthesisDecompositionSingle ReplacementDouble Replacement
- 14. Multiple ChoiceWhat type a reaction is taking place in this picture?SynthesisDecompositionSingle ReplacementDouble Replacement
- 15. Multiple ChoiceWhat does (aq) mean in a chemical reaction?Agsilveraqualiriousaqueous
- 16. Multiple ChoiceThe following reaction is an example of what reaction type?
CoCO3 → CoO + CO2SynthesisDecompositionSingle ReplacementDouble Replacement - 17. Multiple ChoiceSi + S8 --> Si2S4Synthesis (combination)DecompositionSingle replacementDouble replacement
- 18. Multiple ChoiceKOH + H3PO4 --> K3PO4 + H2OSynthesis (combination)DecompositionSingle replacementDouble replacement
- 19. Multiple Choice
Which of the following is a neutralization reaction?
2Na + Cl2 → 2NaCl
CH4 + 2O2 → CO2 + 2H2O
HCl + KOH → KCl + H2O
CaCO3 → CO2 + CaO
- 20. Multiple Choice
Considering the following precipitation reaction:
Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)
What is the correct complete ionic equation?
Pb2+ + (NO3)2- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-
Pb2+ + 2NO3- +2K+ + I- → PbI2(s) + 2K+ + NO3-
Pb2+ + 2NO3- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-
Pb2+ + 2NO3- + 2K+ + 2I- → Pb2+ + 2I- + 2K+ + 2NO3-
- 21. Multiple Choice
Name the ionic compound, LiCl
lithium chlorine
lithium chloride
lithium chlorate
lithium monochloride
- 22. Multiple Choice
Name the ionic compound, CaCO3
calcium carbide
calcium carbon trioxide
calcium carbon oxide
calcium carbonate
- 23. Multiple Choice
Name the ionic compound, FeBr3
Iron (II) bromide
Iron (III) bromide
- 24. Multiple Choice
What is the correct molecular formula for sodium nitrate?
NaNO2
Na3N
Na3NO
NaNO3
- 25. Multiple Choice
What is the correct molecular formula for barium hydroxide?
Ba(OH)2
Ba2OH
BaOH
Ba2OH
- 26. Multiple Choice
Name the molecular compound CO
carbon monoxide
monocarbon monoxide
carbide
oxygen carbide
- 27. Multiple Choicephosphorous acidH3PO4H2PO4H3PH3PO3
- 28. Multiple Choice
What is the formula for nitric acid?
HNO2
HNO3
HNO4
H2NO3
- 29. Multiple Choice
A reaction between Mg(OH)2 and HCl would expect which of the following sets of products?
HOH and HCl
MgCl2 and H2O
MgCl and H2O
MgClOH and H2ClOH
- 30. Multiple ChoiceName HFhydrofluoric acidHypofluoric acidhydrogen fluorine acid
- Answer choicesTagsAnswer choicesTags