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- 1. Multiple ChoiceThe substances listed on the right side of a chemical equation are theYieldsReactantsProductsPrecipitates
- 2. Multiple ChoiceCaCO3 represents a chemicalSymbolFormulaSubscriptReaction
- 3. Multiple ChoiceThe substances listed on the left side of a chemical equation are theProductsCoefficientsPrecipitatesReactants
- 4. Multiple Choice
How many Oxygen atoms are in Al₂(SO₄)₃
4
12
7
24
- 5. Multiple Choice
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 → Fe2O3
4Fe + 3O2 → 2Fe2O3
2 Fe + 3O2 → Fe2O6
4 Fe + O6 → 2Fe2O3
None of the options are correctly balanced.
- 6. Multiple Choice
Which of the following reactions is balanced?
2CH4 + O2 → CO2 + H2O
CH4 + 2O2 → CO2 + H2O
CH4 + 2O2 → CO2 + 2H2O
None of the chemical equations are balanced.
- 7. Multiple Choice
How many HCl molecules do you need to balance this equation?
Mg + __HCl → MgCl2 + H2
1
2
3
4
- 8. Multiple Choice
How many hydrogen atoms TOTAL are in 2H2?
1
2
3
4
- 9. Multiple Choice
According to the Law of Conservation if 30.0 g of NaCl was broken into 11.2 g of Na and some Cl2. How much Cl2 was produced?
18.8 g
30.0 g
11.2 g
2.0 g
- 10. Multiple ChoiceHow do the following two elements bond together?
Cr3+ O2-CrOCr3O2Cr2O3CrO3 - 11. Multiple ChoiceAgFsilver fluoridesilver fluorinemonosilver monofluoridesilver monofluorine
- 12. Multiple ChoiceWhat is the formula for sodium nitrate?Na3NONaNONa3NO3NaNO3
- 13. Multiple ChoiceHow many elements are in C6H12O6?1234
- 14. Multiple Choice
How many atoms of aluminum are on each side of the following equation:
4Al + 3O2 → 2Al2 O3
2
6
1
4
- 15. Multiple ChoiceHow many atoms are there TOTAL in:
H2SO46573 - 16. Multiple Choice
4Si + S8 → 2Si2S4
Synthesis
Decomposition
Single displacement
Double displacement
- 17. Multiple Choice
3Ca + 2AlCl3 → 3CaCl2 + 2Al
Synthesis
Decomposition
Single diplacement
Double displacement
- 18. Multiple Choice
3KOH + H3PO4 → K3PO4 + 3H2O
Synthesis
Decomposition
Single displacement
Double displacement
- 19. Multiple Choice
2Pb(NO3)2 → 2PbO + 4NO2 + O2
Synthesis
Decomposition
Single displacement
Combustion
- 20. Multiple Choice
3Mg + N2 → Mg3N2
Synthesis
Decomposition
Single displacement
Combustion
- 21. Multiple Choice
Fe + H2SO4 → Fe2(SO4)3 + H2
Synthesis (combination)
Decomposition
Single replacement
Combustion
- 22. Multiple Choice
Which reaction type is the following: C5H10O4 + O2 → CO2 + H2O
Decomposition
Single Replacement
Combustion
Double Replacement
- 23. Multiple ChoiceWhich of the following is the general formula for a decomposition reaction?A + B → ABAB → A + BAB + C → AC + BAB + CD → AC + BD
- 24. Multiple ChoiceWhen balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balancedchargesubscriptrandom numbercoefficient
- 25. Multiple Choice
What is the arrow in a chemical equation...
H2 + O → H2O
Reactants
Products
Yields
Chemical Equation
- 26. Multiple ChoiceAn element plus additional element reacts to form one product is an example of which type of chemical reaction?combustiondecompositionsynthesissingle replacement
- 27. Multiple ChoiceWhich type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?double replacementdecompositioncombustionsingle replacement
- 28. Multiple Choice
What are the products of the following reaction?
H2SO4 + KOH →
HK + HSO4
H2O + KSO4
H2O + K2SO4
H2 + K2SO4
- 29. Multiple Choice
How many oxygen atoms, TOTAL are present in the reactant in this chemical equation?
4Fe + 3O2 → 2 Fe2O3
2
3
4
6
- 30. Multiple ChoiceIdentify the correctly balanced equation:Fe + H2O → Fe3O4 + H2C+ H2 → CH4S8 + F2 → SF6N2 + 3H2 → 2NH3
- 31. Multiple ChoiceWhich procedure BEST represents the law of conservation of mass?Evaporating salt water leaves 5 grams of saltBurning 2 kilograms of wood leaves 0.4 kilograms of ashUsing filter paper to separate 2 grams of solid from 10 grams of waterCombining 2 grams of copper and 4 grams of sulfur to produce 6 grams of copper sulfate
- 32. Multiple Choice
Use the activity series on page 293 (figure 13).
Which one of the following would result in a displacement reaction?
Iron with magnesium chloride
magnesium with iron chloride
Iron with Zinc Sulphate
gold with silver nitrate
- 33. Multiple ChoiceA displacement reaction will occur when...a more reactive metal displaces a less reactive metal from its compound.A less reactive metal displaces a more reactive metal from its compoundDisplacement only occurs when two of the same metals are reactedDisplacement reactions will only occur in metals above iron in the reactivity series
- 34. Multiple Choice
Which of the following metals is the most reactive according to the Activity Series (p 293) of metals.
Copper
Zinc
Magnesium
Lithium
- 35. Multiple Choice
The family in the periodic table that contains the most reactive metals are the_______
Alkaline Earth Metals
Transition Metals
Alkali Metals
Other Metals
- 36. Multiple Choice
Based on the activity series, which metal could X represent in the reaction below?
X + Ca (NO3)2 → Ca + X (NO3)2
Ba
Fe
Mg
Zn
- 37. Multiple Choice
What will be the result of sodium reacting with water?
Na + HOH → _____ + ______
NaOH and H2O will be produced
Na2O + H2 will be produced
NaOH and H2 will be produced
NaOH will be produced
- 38. Multiple Choice
Predict the product(s) of this reaction :
Mg + HCl →
no reaction
MgCl2 + H2
MgCl2 + H
MgCl + H
- 39. Multiple Choice
Balance this equation.
_CF4 + _Br2 → _CBr4 + _F2
2,1,2,1
1,2,2,1
1,2,1,2
2,2,2,2
- 40. Multiple Choice
Balance this equation
__Al +__HCl → __H2 +__AlCl3
2, 6, 3, 2
it is already balanced
4, 12, 3, 4
2, 1, 4, 5
- 41. Multiple Choice
In chemical reactions, what does the law 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.
- 42. Multiple ChoiceWhich one is a compound?CoBrFeCO
- 43. Multiple Choice
How many Hydrogen (H) atoms are in NH3O5
3
4
5
1
- 44. Multiple Choice
How many atoms of Carbon are in the following formula? 3C2H6
3
6
12
18
- 45. Multiple Choice
What is the total number of atoms present in 5Na3PO4
5
40
55
8
- 46. Multiple ChoiceWhat is the little number after an element in a chemical equation called.
Example: H2CoefficientSubscriptAtomEquation - 47. Multiple ChoiceWhat is the number before a chemical formula called?
Ex: 2H2 + O2 --> 2H2OCoefficientSubscriptAtomEquation - 48. Multiple Choice
What does the symbol (s) mean in a chemical equation?
Solution
Solid
Liquid
Gas
- 49. Multiple Choice
Which of the following are evidence of a chemical change?
Solid forms
Bubbles from heating
Color change
Light produced
Temperature change
- 50. Multiple Choice
What is the term for a solid that is formed by mixing together two solutions?
Heat of reaction
Precipitate
Aqueous solution
Exothermic
- Answer choicesTagsAnswer choicesTags