ARCHMAGE chemistry 04

What is usually needed to help a decomposition reaction to occur?

a more active second reactant

the addition of energy

the addition of an enzyme

a lower temperature

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Question 2 (Multiple Choice Worth 2 points)

Which of the following is a product formed when CaCO3 decomposes?

Ca2

O2

CO2

CaO2

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Question 3 (Multiple Choice Worth 2 points)

Which of the following is a synthesis reaction?

C2H4 + 3 O2 2 CO2 + 2 H2O

2HBr H2 + Br2

CO2 + H2O H2CO3

F2 + 2 HCl Cl2 + 2 HF

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Question 4 (Multiple Choice Worth 2 points)

Which of the following combinations of reactants will result in a synthesis reaction?

Li + HCl

Al + O2

Ca + H2O

F2 + HCl

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Question 5 (Multiple Choice Worth 2 points)

Which of the following is a product formed when K reacts with Cl2?

KCl

K2Cl

KCl2

K2

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Question 6 (Essay Worth 4 points)

Write the complete balanced equation for the decomposition of Al(ClO3)3. You do not need to make your subscripts smaller; just write them out as regular numbers. For example: Al(ClO3)3.

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Question 7 (Essay Worth 4 points)

Write the complete balanced equation for the reaction between aluminum metal (Al) and chlorine gas (Cl2). You do not need to make the subscripts smaller; just write them out as regular numbers. For example: Cl2.

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Question 8 (Multiple Choice Worth 2 points)

Which of the following compounds will produce H2O as one of the products when it decomposes?

BaO

Li2CO3

KClO3

H2SO4

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