Types Of Reactions Quiz Questions

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  • 1/27 Questions

    A reaction that involves two ionic compounds in solution reacting to form two new compounds is a ? reaction.

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Types Of Reactions Quiz Questions - Quiz
About This Quiz

Explore key types of chemical reactions through this focused quiz. Test your understanding of double replacement, decomposition, combustion, combination, and single replacement reactions, essential for mastering Chemistry fundamentals.

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  • 2. 

    If a double replacement reaction is to occur, it must produce at least one of three different possibilities.  Which of the following is NOT one of the "driving forces" necessary for a double replacement reaction to take place?

    • Produces an insoluble solid (precipitate)

    • Produces a liquid

    • Produces a molecular compound such as water

    • Produces a gas

    Correct Answer
    A. Produces a liquid
    Explanation
    In a double replacement reaction, two compounds exchange ions to form two new compounds. The "driving forces" necessary for this reaction to occur are the formation of a precipitate, a gas, or a molecular compound such as water. These products indicate that a chemical reaction has taken place. The production of a liquid does not indicate a chemical reaction because liquids are already present in the reactants and do not result from the exchange of ions. Therefore, the production of a liquid is not one of the "driving forces" necessary for a double replacement reaction to take place.

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  • 3. 

    A reaction in which one reactant breaks up into two or more products.

    Correct Answer
    decomposition
    Explanation
    Decomposition refers to a reaction where a single reactant undergoes a breakdown or fragmentation into two or more products. This process typically occurs through the breaking of chemical bonds within the reactant molecule, resulting in the formation of multiple smaller molecules or atoms. Decomposition reactions are often facilitated by the application of heat, light, or the presence of a catalyst. This answer accurately describes the process of decomposition without explicitly stating it.

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  • 4. 

    A reaction in which a hydrocarbon reacts with oxygen producing water and carbon dioxide.

    Correct Answer
    combustion
    complete combustion
    Explanation
    Combustion refers to a chemical reaction in which a hydrocarbon reacts with oxygen to produce water and carbon dioxide. This reaction is commonly observed when a fuel, such as gasoline or natural gas, is burned. Complete combustion specifically refers to a combustion reaction where the hydrocarbon is completely oxidized, resulting in the formation of only water and carbon dioxide. In complete combustion, there is no leftover fuel or other byproducts, making it the ideal form of combustion in terms of efficiency and environmental impact.

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  • 5. 

    A reaction in which only one product is formed.

    Correct Answer
    combination
    Explanation
    In a combination reaction, two or more reactants combine to form a single product. This means that only one product is formed in the reaction. It is different from other types of reactions such as decomposition or displacement, where multiple products may be formed. Therefore, the given answer "combination" is correct as it accurately describes a reaction in which only one product is formed.

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  • 6. 

    A reaction in which an element and a compound react and a new element and compound are formed.

    Correct Answer
    single replacement
    Explanation
    A single replacement reaction is a type of chemical reaction where an element replaces another element in a compound, resulting in the formation of a new compound and a new element. This reaction follows the general format of A + BC → AC + B, where A is the element and BC is the compound. The reaction occurs because one element is more reactive than the other, allowing it to displace the less reactive element in the compound. Therefore, the given description perfectly matches the concept of a single replacement reaction.

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  • 7. 

    A term that means "dissolved in water"

    Correct Answer
    aqueous
    Explanation
    The term "aqueous" refers to a substance that is dissolved in water. It is commonly used in chemistry to describe a solution where water is the solvent. For example, if a salt is dissolved in water, it forms an aqueous solution. The term "aqueous" is derived from the Latin word "aqua," which means water.

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  • 8. 

    A whole number placed in front of a formula in a chemical equation in order to balance it.

    Correct Answer
    coefficient
    Explanation
    In chemistry, a coefficient is a whole number placed in front of a formula in a chemical equation in order to balance it. Balancing a chemical equation is important because it ensures that the same number of atoms of each element are present on both sides of the equation. The coefficient represents the number of molecules or atoms involved in the reaction and is used to balance the equation by adjusting the number of each element present.

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  • 9. 

    What kind of reaction will take place between sodium and a solution of magnesium chloride?

    • Single replacement

    • Double replacement

    • Combustion

    • Combination

    • Decomposition

    Correct Answer
    A. Single replacement
    Explanation
    When sodium reacts with a solution of magnesium chloride, a single replacement reaction will occur. In this type of reaction, the more reactive metal (sodium) replaces the less reactive metal (magnesium) in the compound. The sodium will displace the magnesium from the chloride compound, resulting in the formation of sodium chloride and magnesium. This reaction is also known as a displacement reaction, where one element is replaced by another element in a compound.

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  • 10. 

    The balanced equation for the reaction between sodium and a solution of magnesium chloride is:(Make sure you check the chart in your book to see if this takes place!)

    • Na + MgCl --> Mg + NaCl

    • No Reaction

    • 2 Na + MgCl2 --> Mg + 2 NaCl

    • Na + MgCl2 --> Mg + NaCl2

    Correct Answer
    A. 2 Na + MgCl2 --> Mg + 2 NaCl
    Explanation
    The balanced equation for the reaction between sodium and a solution of magnesium chloride is 2 Na + MgCl2 --> Mg + 2 NaCl. In this reaction, two sodium atoms react with one magnesium chloride molecule to produce one magnesium atom and two sodium chloride molecules. This balanced equation follows the law of conservation of mass, where the number of atoms of each element is equal on both sides of the equation.

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  • 11. 

    What kind of reaction describes what happens when calcium is dropped into water?

    • Double replacement

    • Combustion

    • Combination

    • Decomposition

    • Single replacement

    Correct Answer
    A. Single replacement
    Explanation
    When calcium is dropped into water, a single replacement reaction occurs. In this reaction, calcium replaces the hydrogen in water to form calcium hydroxide and hydrogen gas. This is represented by the chemical equation: Ca + 2H2O → Ca(OH)2 + H2.

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  • 12. 

    The balanced equation for calcium and water is:

    • No reaction

    • 2 Ca + 2 H2O --> H2 + Ca(OH)2

    • Ca + H2O --> 2 H + CaO

    • Ca + H2O --> H2 + CaO

    Correct Answer
    A. 2 Ca + 2 H2O --> H2 + Ca(OH)2
    Explanation
    The balanced equation for the reaction between calcium and water is 2 Ca + 2 H2O → H2 + Ca(OH)2. This equation shows that two moles of calcium react with two moles of water to produce one mole of hydrogen gas and one mole of calcium hydroxide. The coefficients in the equation represent the stoichiometric ratios between the reactants and products, ensuring that the number of atoms of each element is conserved.

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  • 13. 

    Which is the equation that would occur if silver was placed in a solution of potassium nitrate?

    • No reaction

    • Ag + KNO3 --> K + AgNO3

    • 3 Ag + K3N --> 3 K + Ag3N

    • Ag + K2NO3 --> K2 + AgNO3

    Correct Answer
    A. No reaction
    Explanation
    Silver is less reactive than potassium so no reaction will take place

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  • 14. 

    What type of reaction would occur if hydrochloric acid was mixed with barium hydroxide?

    • Double replacement

    • Single replacement

    • Combustion

    • Combination

    • Decompostion

    Correct Answer
    A. Double replacement
    Explanation
    When hydrochloric acid is mixed with barium hydroxide, a double replacement reaction occurs. In this type of reaction, the positive ions of the two compounds switch places to form two new compounds. In this case, the barium ions from barium hydroxide combine with the chloride ions from hydrochloric acid to form barium chloride, while the hydroxide ions from barium hydroxide combine with the hydrogen ions from hydrochloric acid to form water. This reaction can be represented by the balanced chemical equation: HCl + Ba(OH)2 → BaCl2 + H2O.

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  • 15. 

    What is the balanced equation for the reaction between hydrochloric acid and barium hydroxide?

    • HClO + BaOH --> BaClO + HOH

    • 2 HCl + Ba(OH)2 --> 2 H2O + BaCl2

    • 2 HCl + BaOH2 --> H2O + BaCl2

    • HCl + BaOH --> BaCl + HOH

    Correct Answer
    A. 2 HCl + Ba(OH)2 --> 2 H2O + BaCl2
    Explanation
    The balanced equation for the reaction between hydrochloric acid and barium hydroxide is 2 HCl + Ba(OH)2 --> 2 H2O + BaCl2. This equation is balanced because there are an equal number of atoms of each element on both sides of the equation. The coefficients in front of each compound indicate the number of molecules or formula units involved in the reaction, ensuring that the equation obeys the law of conservation of mass.

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  • 16. 

    The reason that all chemical equations must be balanced is to obey the law of conservation of ?

    Correct Answer
    mass
    Explanation
    All chemical equations must be balanced to obey the law of conservation of mass. This law states that matter cannot be created or destroyed in a chemical reaction, only rearranged. Balancing the equation ensures that the number of atoms of each element on both sides of the equation is equal, thus conserving mass.

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  • 17. 

    The law of conservation of mass states that:

    • Mass depends on the number and types of atoms present

    • Mass can increase, decrease or stay the same in a reaction

    • Mass cannot be created or destroyed

    • Mass is not the same as weight

    Correct Answer
    A. Mass cannot be created or destroyed
    Explanation
    The law of conservation of mass states that mass cannot be created or destroyed. This means that in any chemical reaction or physical change, the total mass of the substances involved remains constant. While the mass can increase or decrease in a reaction, the total amount of mass before and after the reaction will always be the same. This principle is fundamental to understanding the behavior of matter and is a fundamental principle in chemistry and physics.

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  • 18. 

    In incomplete combustion, a poisonous gas called ? is produced.

    • Carbon dioxide

    • Carbon monoxide

    • Carbon tetrachloride

    • Carbon

    Correct Answer
    A. Carbon monoxide
    Explanation
    In incomplete combustion, carbon monoxide is produced. This is because incomplete combustion occurs when there is not enough oxygen present to completely burn the fuel. Instead of forming carbon dioxide, which is the product of complete combustion, carbon monoxide is formed. Carbon monoxide is a poisonous gas that is colorless, odorless, and tasteless. It is dangerous because it can bind to hemoglobin in the blood, reducing its ability to carry oxygen to the body's tissues. This can lead to symptoms such as headache, dizziness, nausea, and even death in high concentrations.

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  • 19. 

    In incomplete combustion, there is usually unburned ? that is produced.

    • Hydrogen

    • Carbon dioxide

    • Carbon

    • Water

    Correct Answer
    A. Carbon
    Explanation
    In incomplete combustion, there is usually unburned carbon that is produced. Incomplete combustion occurs when there is not enough oxygen present to fully burn the fuel. This results in the production of carbon particles or soot, which are released into the air. These carbon particles can be harmful to human health and contribute to air pollution.

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  • 20. 

    The complete combustion of C4H8 would be written as:

    • C4H8 --> CO2 + H2O

    • C4H8 + O2 --> CO2 + H2O

    • C4H8 + 6 O2 --> 4 CO2 + 4 H2O

    • C4H8 + O2 --> 4 H2 + 4 CO2

    Correct Answer
    A. C4H8 + 6 O2 --> 4 CO2 + 4 H2O
    Explanation
    The balanced equation C4H8 + 6 O2 --> 4 CO2 + 4 H2O represents the complete combustion of C4H8. This means that when C4H8 reacts with oxygen (O2), it produces carbon dioxide (CO2) and water (H2O) in a 4:4 ratio. The coefficient of 6 in front of O2 indicates that 6 molecules of oxygen are required for every molecule of C4H8 to undergo complete combustion. This balanced equation follows the law of conservation of mass, ensuring that the number of atoms of each element is the same on both sides of the equation.

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  • 21. 

    The reaction between sodium and iodine would be ?

    • Double replacement

    • Single replacement

    • Combination

    • Complete combustion

    • Decompostion

    Correct Answer
    A. Combination
    Explanation
    The reaction between sodium and iodine would be a combination reaction. In a combination reaction, two or more substances combine to form a single product. In this case, sodium and iodine would react together to form sodium iodide.

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  • 22. 

    The equation for the reaction between sodium and iodine would be ?

    • Na + I --> NaI

    • Na + I2 --> NaI2

    • 2 Na + I2 --> 2 NaI

    • Na + 2 I --> NaI2

    Correct Answer
    A. 2 Na + I2 --> 2 NaI
    Explanation
    The equation for the reaction between sodium and iodine is 2 Na + I2 --> 2 NaI. This is because sodium has a charge of +1 and iodine has a charge of -1. In order for the charges to balance out and form a stable compound, two sodium atoms are needed to react with one iodine molecule. This results in the formation of two sodium iodide molecules.

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  • 23. 

    Aluminum bromide breaking up into its elements would be an example of ?

    • Decomposition

    • Combination

    • Single replacement

    • Double replacement

    • Combustion

    Correct Answer
    A. Decomposition
    Explanation
    The given correct answer, decomposition, is appropriate because it refers to the process of a compound breaking down into simpler substances or elements. In this case, aluminum bromide breaking up into its constituent elements, aluminum and bromine, fits the definition of decomposition.

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  • 24. 

    The balanced equation for aluminum bromide breaking up into its elements would be ?

    • AlBr --> Al + Br

    • AlBr3 --> Al + Br3

    • AlBr3 --> Al + 3 Br

    • 2 AlBr3 --> 2 Al + 3 Br2

    Correct Answer
    A. 2 AlBr3 --> 2 Al + 3 Br2
    Explanation
    The balanced equation for the decomposition of aluminum bromide is 2 AlBr3 --> 2 Al + 3 Br2. This equation shows that two molecules of aluminum bromide (AlBr3) break down into two atoms of aluminum (Al) and three molecules of bromine (Br2). This balanced equation follows the law of conservation of mass, where the number of atoms of each element is the same on both sides of the equation.

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  • 25. 

    Review: One mole of nitrogen gas would have a volume of ? liters at STP

    Correct Answer
    22.4
    Explanation
    At STP (Standard Temperature and Pressure) conditions, one mole of any ideal gas occupies a volume of 22.4 liters. This is known as the molar volume of a gas at STP. Therefore, the correct answer is 22.4 liters.

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  • 26. 

    Review: One mole of nitrogen gas would consist of 6.02 x 1023?

    • Atoms

    • Molecules

    • Formula units

    Correct Answer
    A. Molecules
    Explanation
    nitrogen is a diatomic gas made up of molecules

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  • 27. 

    Review: One mole of nitrogen gas would have a have a mass of ?

    • 14.0 grams

    • 28.0 grams

    • 42.0 grams

    • 7.0 grams

    Correct Answer
    A. 28.0 grams
    Explanation
    The molar mass of nitrogen gas (N2) is 28.0 grams. This means that one mole of nitrogen gas would have a mass of 28.0 grams.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 01, 2010
    Quiz Created by
    Shuling

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