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- 1. Multiple ChoiceHow many total atoms are represented? 4Al2O328520
- 2. Multiple ChoiceSubstances that enter into a chemical reaction (found to the left side of the arrow)productreactantchemicalbalanced equation
- 3. Multiple Choice
In every balanced chemical equation, each side of the equation has the same number of ____.coefficientsmolesmoleculesatoms of each element - 4. Multiple ChoiceThe large number in front of a chemical formula or compound is the ___________.coefficientproductphysicalchemical
- 5. Multiple ChoiceWhat is the part of the chemical equation in green called?
Fe + S --> FeSproductsreactantsyieldchemical formula - 6. Multiple ChoiceHow many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O32614
- 7. Multiple ChoiceHow many atoms are there TOTAL in:
H2SO46573 - 8. Multiple Choice___________________ are the elements or compounds that are formed in a chemical
reaction.PolymersBondsReactantsProducts - 9. Multiple Choice
How do you determine how many particles are in a compound or element used in a chemical equation?
Add the moles of all the reactants and subtract the moles of all the products
Multiply the number of moles by Avogadro's number (6.022 x 10^23 )
The number of moles equals the number of particles
Multiply the molar mass by Avogadro's number (6.022 x 10^23)
- 10. Multiple Choice
If you are told how many particles of reactant or product there are in a certain equation how do you determine the number of grams?
Multiply the particles by Avogadro's number
Divide the particles by Avogadro's number
Add Avogadro's number
Convert from particles to moles by dividing by Avogadro's number then convert to grams by multiplying by the molar mass.
- 11. Multiple Choice_P4+_O2 → _P2O33 P4+1 O2 → 2 P2O31 P4+1 O2 → 2 P2O31 P4+ 3 O2 → 2 P2O31 P4+ 2 O2 → 3 P2O3
- 12. Multiple Choice_AgNO3 + _Cu →_Cu(NO3)2 + _Ag2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
- 13. Multiple Choice_BaS + _PtF2 → _BaF2 + _PtS1 BaS + 1 PtF2 → 1 BaF2 + 1 PtS4 BaS + 2 PtF2 → 1 BaF2 + 1 PtS1 BaS + 2 PtF2→ 2 BaF2 + 2 PtS1 BaS + 3 PtF2 →1 BaF2 + 2 PtS
- 14. Multiple Choice_AlBr3 + _K2SO4 → _KBr + _Al2(SO4)36 AlBr3 + 1 K2SO4 → 6 KBr + 1 Al2(SO4)32 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)31 AlBr3 + 1 K2SO4 → 2 KBr + 3 Al2(SO4)32 AlBr3 + 3 K2SO4 → 1 KBr + 2 Al2(SO4)3
- 15. Multiple Choice_SO2 + _Li2Se →_SSe2 + _Li2O1 SO2 + 2 Li2Se → 1 SSe2 + 2 Li2O1 SO2 + 1 Li2Se → 2 SSe2 + 2 Li2O2 SO2 + 2 Li2Se → 2 SSe2 + 2 Li2O2 SO2 + 2 Li2Se → 1 SSe2 + 1 Li2O
- 16. Multiple Choice_Al + _HCl →_H2 + _AlCl32 Al + 2 HCl → 2 H2 + 6 AlCl33 Al + 3 HCl → 6 H2 + 2 AlCl31 Al + 1 HCl → 3 H2 + 1 AlCl32 Al + 6 HCl → 3 H2 + 2 AlCl3
- 17. Multiple Choice_NaF + _Br2 →_NaBr + _F21NaF + 2 Br2 →1 NaBr + 2 F22NaF + 2 Br2 → 2 NaBr + 2 F22 NaF + 3 Br2 → 1 NaBr + 2 F22 NaF + 1 Br2 → 2 NaBr + 1 F2
- 18. Multiple Choice_AgNO3 + _Cu →_Cu(NO3)2 + _Ag2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
- 19. 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.
- 20. Multiple ChoiceFill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO44, 51, 63, 82,2 - 21. Multiple Choice
What is the law of conservation of energy?
Energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
Energy can be created and destroyed, never changes form.
Energy cannot be transferred from one object to another. Energy is only able to move in a straight line.
Energy is bought at the grocery store.
- 22. Multiple Choice
What unit of measurement do you use for mass?
Liters
meters
grams
feet
- 23. Multiple Choice
What is the name of the table where you find elements?
The element diagram
The Bohr model
The periodic table
The Scientific Method
- 24. Multiple Choice
What is a chemical reaction?
Being shocked by a chemical, and then finding it on the periodic table.
Developing a rash
How many chemicals are in a compound
The Process in which reactants go through a change to produce products or a different substance.
- 25. Multiple ChoiceTwo clear colorless solutions were combined.
The student observed that the temperature changed from 25 •C to 23 •C when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?One of the original compounds came out of solutionThe solutions reacted chemicallySome of the water froze into ice crystalsRapid evaporation of water occurred, leaving a solid - 26. Multiple ChoiceWhich chemical reaction forms Carbon Dioxide and Water?Double ReplacementSingle ReplacementCombustionDecomposition
- 27. Multiple Choice
How do you determine the molar mass of a compound?
Take the atomic mass (from the Periodic Table) of the element listed first in the compound
Add the atomic mass (Periodic Table) of all the cations in the compound
Add the atomic mass (Periodic Table) of every atom in the compound
Add the atoms of each element in the compound
- 28. Multiple Choice
If you are told (given) the number of grams of a product or reactant in a chemical equation, how do you determine how many particles there are?
Grams and particles are the same thing.
Convert from grams to moles. Moles and particles are the same thing.
Convert from grams to moles and then convert from moles to particles.
Convert to a new religion.
- Answer choicesTagsAnswer choicesTags