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Chemistry and Nationalism Key Concepts
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1
Question
What indicates a chemical reaction has taken place?
Answer
Change in state, color, gas evolution, or temperature change.
2
Question
Write the word equation for magnesium burning in air.
Answer
Magnesium + Oxygen → Magnesium oxide.
3
Question
How is a chemical equation more concise than a word equation?
Answer
Uses chemical formulae instead of words.
4
Question
What does a balanced chemical equation represent?
Answer
Equal number of atoms of each element on both sides.
5
Question
Why must chemical equations be balanced according to the law of conservation of mass?
Answer
Mass cannot be created or destroyed; atoms must be conserved.
6
Question
Balance the chemical equation: Fe + H₂O → FeO + H₂.
Answer
3Fe + 4H₂O → 3FeO + 4H₂.
7
Question
What physical state symbols are used in chemical equations?
Answer
(s) for solid, (l) for liquid, (g) for gas, and (aq) for aqueous solution.
8
Question
Identify the reaction type: Calcium oxide reacts vigorously with water to form calcium hydroxide.
Answer
Combination (synthesis) reaction.
9
Question
Give an example of an exothermic reaction involving oxidation.
Answer
Burning of magnesium or combustion of natural gas.
10
Question
What is a decomposition reaction? Provide an example.
Answer
A single compound breaks down into simpler substances, e.g., CaCO₃ → CaO + CO₂.
11
Question
What energy forms are involved in decomposition reactions?
Answer
Heat, light, or electricity.
12
Question
Describe the process of electrolysis of water.
Answer
Electric current decomposes water into hydrogen and oxygen gases.
13
Question
What is a displacement reaction? Give an example involving iron and copper sulfate.
Answer
Iron displaces copper: Fe + CuSO₄ → FeSO₄ + Cu.
14
Question
Define a double displacement reaction and give an example.
Answer
Ion exchange forms insoluble precipitate, e.g., Na₂SO₄ + BaCl₂ → BaSO₄(s) + 2NaCl.
15
Question
What is meant by oxidation and reduction in a chemical reaction?
Answer
Oxidation: gain of oxygen or loss of hydrogen; Reduction: loss of oxygen or gain of hydrogen.
16
Question
In the reaction 2Cu + O₂ → 2CuO, is copper oxidised or reduced?
Answer
Oxidised.
17
Question
What is corrosion? Give an example related to iron.
Answer
Attacked by moisture or acids, e.g., rusting of iron.
18
Question
Why do fats and oils become rancid over time?
Answer
Oxidation causes them to spoil, changing smell and taste.
19
Question
Describe why silver and copper tarnish.
Answer
Oxidation with substances like moisture or acids forms tarnish.
20
Question
What is a precipitation reaction? Provide an example.
Answer
Formation of insoluble salt, e.g., BaSO₄ from BaCl₂ and Na₂SO₄.
21
Question
What is the process called when metal reacts with water or acids?
Answer
Corrosion or oxidation.
22
Question
How does Ernst Renan describe the attributes that define a nation?
Answer
Shared sacrifice, glorious past, will, and collective identity.
23
Question
Why does Renan argue that nations are important?
Answer
They are a large-scale solidarity and guarantee liberty.
24
Question
What did the French Revolution emphasize about the nation?
Answer
Sovereignty resides with the people, emphasizing citizenship and unity.
25
Question
What administrative changes did Napoleon introduce in controlled territories?
Answer
Equality before law, abolishing privileges, uniform laws, and nationalism.
26
Question
How did the Congress of Vienna (1815) aim to restore Europe?
Answer
Restoring monarchies and creating a conservative order post-Napoleon.
27
Question
What was the main aim of the German Zollverein established in 1834?
Answer
To unite German states economically and foster national sentiment.
28
Question
How did conservatives after 1815 view modernization and reform?
Answer
They believed it should strengthen traditional institutions gradually.
29
Question
Who was Giuseppe Mazzini and what was his vision for Italy?
Answer
A revolutionary who aimed to unify Italy into a democratic republic.
30
Question
In what ways did culture, such as art and literature, contribute to nationalism during the Romantic era?
Answer
By emphasizing emotions, shared heritage, and folk traditions.