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Final Review > Types of Chemical Reactions > Flashcards

Types of Chemical Reactions Flashcards

1
Q

What are examples of chemical changes?

A

-When wood in a campfire burns.
-When photosynthesis, which is when plants change water and carbon dioxide into glucose and oxygen, occurs.

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2
Q

What is made in each of these processes?

A

New substances

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3
Q

True or False: It is not always easy to tell if a new substance forms during a change.

A

True

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4
Q

True or False: There are some clues that you can use to tell if a chemical change has occurred.

A

True

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5
Q

Precipitate Definition

A

An insoluble solid formed in a chemical reaction.

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6
Q

What are the six clues that suggest a chemical change is occurring?

A

-Formation of a gas
-Formation of a precipitate
-Change in colour
-Change in odour
-Change in temperature
-Production of light

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7
Q

True or False: The new substances, or products, that form during chemical changes will depend on the type of chemical reaction occurring.

A

True

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8
Q

What does understanding the different types of chemical reactions allow you to do?

A

To identify what products are most likely to form.

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9
Q

What are four different types of chemical reactions?

A

Synthesis, Decomposition, Single Displacement, and Double Displacement.

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10
Q

What does the name of each reaction provide a clue about?

A

How the reactants change into products.

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11
Q

What is the chemical reaction in which two or more reactants combine to form a new product?

A

Synthesis Reaction

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12
Q

Synthesis Reaction Definition

A

A chemical reaction in which two or more reactants combine to produce a new product.

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13
Q

What is the general equation in which synthesis reactions can be represented by?

A

A + B (arrow) AB

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14
Q

Explain what the general equation that synthesis reactions can be represented by means

A

Two or more reactants (A and B) combine to form one product (AB).

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15
Q

True or False: The reactants in a synthesis reaction may be any combination of elements and compounds, but the product will always be a compound.

A

True

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16
Q

What is the chemical reaction in which a compound breaks down into two or more products?

A

Decomposition Reaction

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17
Q

Decomposition Reaction Definition

A

A chemical reaction in which a compound breaks down (decomposes) into two or more simpler compounds or elements.

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18
Q

What is the general chemical equation in which decomposition reactions can be represented by?

A

AB (arrow) A + B

19
Q

What might the products in a decomposition reaction be any combination of?

A

Elements and Compounds

20
Q

True or False: The reactant in a decomposition reaction will always be a compound.

A

True

21
Q

True or False: A decomposition reaction is the reverse of a synthesis reaction.

A

True

22
Q

What is the chemical reaction in which a reactive element (a metal or a non-metal) and a compound react to produce another element and another compound?

A

A Single Displacement Reaction

23
Q

Single Displacement Reaction Definition

A

A chemical reaction in which one element takes the place of another element in a compound.

24
Q

Therefore, a single displacement reaction is a chemical reaction in which:

A

An element takes the place of, or displaces, another element in a compound.

25
Q

What are the two general chemical equations that single displacement reactions can be represented by?

A

-A + BC (arrow) AC + B (for single displacement, where A is a metal).
-A + BC (arrow) BA + C (for single displacement, where A is a non-metal).

26
Q

What do the two general chemical equations that single displacement reactions can be represented by mean?

A

-The first equation represents a reaction involving a metal replacing another metal.
-The second equation represents a reaction involving a non-metal replacing another non-metal.

27
Q

In a Single Displacement Reaction, why do metals displace other metals?

A

Because a metal forms positive ions, and therefore, it must displace the positive ion from the compound so that a new ionic compound can form.

28
Q

What is the list of elements organized according to their chemical reactivity called?

A

An Activity Series

29
Q

Activity Series Definition

A

A list of elements organized according to their chemical reactivity; the most reactive element appears at the topic and the least reactive element appears at the bottom.

30
Q

True or False: The most reactive element is at the top of the list, and the least reactive element is at the bottom.

A

True

31
Q

A reactive metal will displace or replace a metal in a compound that is __________ it in the activity series.

A

Below

32
Q

What is one element on the activity series of metals that is not a metal?

A

Hydrogen

33
Q

Why can metals take the place of hydrogen in compounds?

A

Because hydrogen ions can be positively charged.

34
Q

True or False: The ion of a non-metal is negatively charged, so it can only be replaced with another non-metal.

A

True

35
Q

What is the chemical reaction called in which the positive ions of two compounds change places and form two new compounds?

A

Double Displacement Reaction

36
Q

Double Displacement Reaction Definition

A

A chemical reaction in which the positive ions of two different compounds exchange places, resulting in the formation of two new compounds-one of which may be a precipitate.

37
Q

What are usually the reactants of a double displacement reaction?

A

Aqueous solutions of ionic compounds.

38
Q

What is the general chemical equation that double displacement reactions can be represented by?

A

AB + CD (arrow) AD + CB

39
Q

What are the characteristics of a Synthesis Reaction?

A

Two reactants join to form a single compound.

40
Q

What are the characteristics of a Decomposition Reaction?

A

A single compound breaks apart into two or more products?

41
Q

What are the characteristics of a Single Displacement Reaction?

A

A reactive element takes the place of a less reactive element in a compound.

42
Q

What are the characteristics of a Double Displacement Reaction?

A

Two ionic compounds in a solution switch ions and form two new compounds, including a precipitate.

43
Q

Worksheets under Submission Tab Called “Chemistry Test Review”; Textbook Questions on Page 189 (1-2, 5-8), on Page 193 (1-2) and on Page 196 (1-2)

A

Depending on comfort level.

Final Review (14 decks)

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