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- 1. Multiple Choice
Which is the name of the kind of solid substance formed in this figure?aqueousprecipitateacidsynthesis - 2. Multiple ChoiceAn element plus additional element reacts to form one product is an example of which type of chemical reaction?combustiondecompositionsynthesissingle replacement
- 3. Multiple ChoiceMagnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas this happens because?Magnesium is higher on the reactivity series then hydrogenmagnesium is more reactive than hydrogenmagnesium is able to break the bond between HCl and form MgCl2both b and c are correct
- 4. Multiple ChoiceWhich of the following compounds will not disassociate in water?NaClPbCl2MgNO3Na2SO4
- 5. Multiple ChoiceDescribes the number of molecules in a compound and is used to balance a chemical reaction.coefficientsubscriptsuperscriptSI unit
- 6. Multiple ChoiceWhich type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?double replacementdecompositioncombustionsingle replacement
- 7. Multiple ChoiceProvides evidence that a chemical reaction has occurred.dissolvingmeltingformation of a gasbending
- 8. Multiple ChoiceWhat is the probable product of a double-replacement reaction?A new compound and a replaced metalA new compound and a replaced nonmetal2 different compounds 1 aqueous and 1 that is a solid, liquid or gasA single compound
- 9. Multiple ChoiceWhat type of chemical reaction takes place when fluorine reacts with sodium bromide?single replacementdouble replacementcombustionsynthesis
- 10. Multiple ChoiceWhich reaction between halogens and halide salts will occur?F2(g) + FeI2(aq) → FeF2(aq) + I2 (g)Cl2(g) + SrF2(aq) → SrCl2(aq) + F2(g)I2(g) + MgBr2(aq) → MnI2(aq) + Br2(g)Br2(l) + CoCl2(aq) → CoBr2(aq) + Cl2(g)
- 11. Multiple ChoiceA chemical reaction that shows the formation of a solid and identifies the spectator ionsnet ionic equationdouble replacementionic equationdissociation
- 12. Multiple ChoicePredict the following reaction
NaCl + Ca(NO3)2 -->no reaction both products are aqueousCalcium chloride and sodium nitrate are producedsodium nitrate is a solid formedcalcium chloride is the solid formed - 13. Multiple ChoiceA compound is reacted and forms two new substances. What type of reaction is this?combustionsynthesisdecompositionsingle replacement
- 14. Multiple ChoiceDescribes the number of atoms in a compound of each element.coefficientsuperscriptsubscriptSI unit
- 15. Multiple ChoiceThe word oxidation describesgain of electronsloss of electronsnumber of electrons remains the samenumber of electrons transfered
- 16. Multiple ChoiceThe word reduction describesgain of electronsloss of electronsnumber of electrons remains the sametransfer of electrons
- 17. Multiple ChoiceWhat are the correct coefficients when this equation is balanced?
KClO3 --> KCl + O22,2,22,2,31,2,33,3,3 - 18. Multiple ChoiceWhich half reaction shows the element being reduced. In the following reaction.
2Na + Cl2 --> 2NaClNa0 --> Na+1 + 1e-Cl20 + 2e- --> 2Cl-Na0 + 1e- --> Na+1Cl20 --> 2Cl- + 2e- - 19. Multiple ChoicePotassium iodide is a catalyst in a chemical reaction where would this be placed when writing the chemical reaction?product sidereactant sideabove the arrowleft out
- 20. Multiple ChoiceA metal is reacted with an acid to produce a salt and a hydrogen gas. What type of reaction has occurred?neutralizationdouble replacementsingle replacementsynthesis
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