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Chemical Reactions

Edition

Question 1

This type of bond occurs when a pair of electrons are shared

between two nonmetals

A Ionic bondB Triple BondC Covalent BondD Polyatomic

This type of bond occurs when a pair of electrons are shared

between two nonmetals

A Ionic bondB Triple BondC Covalent bondD Polyatomic

$100

Question 2

This is a material used to decrease the rate of a

chemical reaction

A ConcentrationB Road blockC InhibitorD Catalyst

This is a material used to decrease the rate of a

chemical reaction

A ConcentrationB Road blockC InhibitorD Catalyst

$200

Question 3

The materials present after a reaction (on the right side of the equation) are called…

A ReactantsB ProductsC FormulasD Subscripts

The materials present after a reaction (on the right side of the equation) are called…

A ReactantsB ProductsC FormulasD Subscripts

$300

Question 4

Conservation of mass states that…

A Matter can’t be created or destroyed

B One element replaces another element

C chemical formulas use subscripts

D Coefficients are important

Conservation of mass states that…

A Matter can’t be created or destroyed

B One element replaces another element

C Chemical formulas use subscripts

D Coefficients are important

$500

Question 5

This uses symbols and formulas to show

chemical reactionsA synthesisB chemical formulaC decompositionD chemical equation

This uses symbols and formulas to show

chemical reactionsA synthesisB chemical formulasC decompositionD Chemical equations

$1,000

Question 6

A reaction that releases energy in the form of

heat is anA Endothermic ReactionB Temperature ReactionC Exothermic ReactionD A Hot reaction

A reaction that releases energy in the form of

heat is anA Endothermic ReactionB Temperature ReactionC Exothermic ReactionD A hot reaction

$2,000

Question 7

When heat is added to change the reaction, the

reaction rate…A decreases (slows down)B is not effectedC becomes inhibitedD increases (speeds it up)

When heat is added to change the reaction, the

reaction rate..A decreases (slows down)B is not effectedC becomes inhibitedD increases (speeds it up)

$4,000

Question 8

What is an example of chemical change?

A Burning a log

B Cutting an object in half

C Melting an ice cubeD Throwing a rock on the ground

What is an example of chemical change?

A Burning a logB Cutting an object in halfC Melting an ice cubeD Throwing a rock on the ground

$8,000

Question 9

Why does the reaction rate increase with greater

concentration?A More molecules for the reaction

B Bonds are brokenC because it’s a mixtureD Because of chemistry

Why does the reaction rate increase with

greater concentration?A More molecules for the reaction

B Bonds are brokenC because it’s a mixtureD Because of Chemistry

$16,000

Question 10

A material that increases the rate of a reaction by lowering the

activation energy is called a(n)

A replacementB catalystC synthesisD combustion

A material that increases the rate of a reaction by lowering the

activation energy is called a(n)

A replacementB catalystC synthesisD combustion

$32,000

Question 11

Which of the following would increase the rate

of a reaction?A Greater concentrationB Higher TemperatureC Greater Surface AreaD All of the above

Which of the following would increase the rate

of a reaction?A Greater ConcentrationB Higher TemperatureC Greater Surface AreaD All of the above

$64,000

Question 12

Which type of reaction absorbs or takes in heat

energy?A Endothermic reactionB Activation Energy C Exothermic ReactionD None of these

Which type of reaction absorbs or takes in heat

energy?A Endothermic ReactionB Activation EnergyC Exothermic ReactionD none of these

$125,000

Question 13

Chemical Reactions are written as ______ and balanced with______

A products & symbolsB Compounds & Subscripts

C substances & elements

D equations & coefficients

Chemical Reactions are written as ______ and balanced with______

A products & SymbolsB compounds & subscripts

C substances & elements

D equations and coefficients

$250,000

Question 14

Which of the following tells you how many atoms or molecules of

each reactant or product take part in the reaction?

A SubscriptsB CoefficientsC FormulasD an equation

Which of the following tells you how many atoms or molecules of

each reactant or product take part in the reaction?

A SubscriptsB CoefficientsC FormulasD an equation

$500,000

Question 15

The total mass of the reactants must equal the total mass of the

products- is an example of a

A Balanced equationB Conservation of massC MathD Both A & B

The total mass of the reactants must equal the total mass of the

products- is an example of a

A Balanced equationB Conservation of MassC MathD Both A & B

$1,000,000