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Chemistry > Chp 6- Chemical Reactions > Flashcards

Chp 6- Chemical Reactions Flashcards

1
Q

What is a synthesis reaction?

A

A reaction in which two or more elements or compounds combine to give one new compound.

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2
Q

What is the general equation for a synthesis reaction involving a metal and oxygen?

A

Metal + Oxygen → Metallic Oxide.

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3
Q

What is the synthesis reaction for potassium and oxygen?

A

4 K + O2 → 2 K2O.

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4
Q

What is the synthesis reaction for zinc and oxygen?

A

2 Zn + O2 → 2 ZnO [Yellow-hot, white-cold].

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5
Q

What is the synthesis reaction for iron and oxygen?

A

4 Fe + 3 O2 → 2 Fe2O3 [Rust].

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6
Q

What is the synthesis reaction for copper and oxygen?

A

2 Cu + O2 → 2 CuO [Black].

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7
Q

What is the synthesis reaction for mercury and oxygen?

A

2 Hg + O2 → 2 HgO [Orangish-red].

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8
Q

What is the synthesis reaction for an element and chlorine?

A

Element + Chlorine → Chloride.

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9
Q

What is the synthesis reaction for hydrogen and oxygen?

A

2 H2 + O2 → 2 H2O.

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10
Q

What is the synthesis reaction for phosphorus and oxygen?

A

4 P + 5 O2 → 2 P2O5 [White, crystalline solid].

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11
Q

What is the synthesis reaction for an element and sulfur?

A

Element + Sulphur → Sulphide.

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12
Q

What is the synthesis reaction for zinc and sulfur?

A

2 Zn + S → ZnS [Black].

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13
Q

What is the synthesis reaction for iron and sulfur?

A

Fe + S → FeS [Black].

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14
Q

What is the synthesis reaction for silver and sulfur?

A

2 Ag + S → Ag2S [Black].

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15
Q

What is the synthesis reaction for an element and nitrogen?

A

Element + Nitrogen → Nitride.

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16
Q

What is the synthesis reaction for calcium and nitrogen?

A

3 Ca + N2 → Ca3N2.

17
Q

What is the synthesis reaction for magnesium and nitrogen?

A

3 Mg + N2 → Mg3N2.

18
Q

What is the synthesis reaction for aluminum and nitrogen?

A

2 Al + N2 → AlN.

19
Q

What is the synthesis reaction for lower oxides and oxygen?

A

Lower oxide + Oxygen → Higher oxide.

20
Q

What is the synthesis reaction for carbon monoxide and oxygen?

A

2 CO + O2 → 2 CO2.

21
Q

What is the synthesis reaction for nitrogen monoxide and oxygen?

A

2 NO + O2 → 2 NO2.

22
Q

What is the synthesis reaction for iron(II) oxide and oxygen?

A

4 FeO + O2 → 2 Fe2O3 [Rust].

23
Q

What is a decomposition reaction?

A

A reaction in which a chemical compound decomposes into two or more simpler substances.

24
Q

What is the general equation for a decomposition reaction?

A

AB → A + B.

25
Q

What happens to the oxides of metals from A to Cu when heated?

A

They are stable to heat.

26
Q

What is the decomposition reaction for mercury(II) oxide?

A

2 HgO → 2 Hg + O2.

27
Q

What is the decomposition reaction for silver(I) oxide?

A

2 Ag2O → 4 Ag + O2.

28
Q

What happens to higher oxides when heated?

A

Higher oxides decompose to lower oxides.

29
Q

What is the decomposition reaction for lead(II) carbonate?

A

PbCO3 → PbO + CO2.

30
Q

What happens to the carbonates of K and Na when heated?

A

They are stable to heat.

31
Q

What happens to carbonates from Ca to Cu when heated?

A

They decompose to give metallic oxides and carbon dioxide.

32
Q

What is the decomposition reaction for calcium carbonate?

A

CaCO3 → CaO + CO2.

33
Q

What is the decomposition reaction for zinc carbonate?

A

ZnCO3 → ZnO + CO2.

34
Q

What is the decomposition reaction for hydroxides from Ca to Cu?

A

They decompose on heating to give metallic oxide and water.

35
Q

What is the decomposition reaction for calcium hydroxide?

A

Ca(OH)2 → CaO + H2O.

36
Q

What is the decomposition reaction for iron(II) hydroxide?

A

Fe(OH)2 → FeO + H2O.

37
Q

What happens to hydroxides of Hg and Ag when heated?

A

They decompose to give the metal, oxygen, and water.

38
Q

What is the decomposition reaction for mercury(II) hydroxide?

A

Hg(OH)2 → Hg + O2 + H2O.

39
Q

What is the decomposition reaction for silver(I) hydroxide?

A

Ag2O → 2 Ag + O2 + H2O.

Chemistry (9 decks)

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