Podcast
Questions and Answers
Which metal is the least reactive in the reactivity series provided?
Which metal is the least reactive in the reactivity series provided?
- Sodium
- Copper
- Lead
- Silver (correct)
Which metal is the most reactive based on the reactivity series mentioned in the text?
Which metal is the most reactive based on the reactivity series mentioned in the text?
- Iron
- Calcium
- Zinc
- Potassium (correct)
Which metal does not corrode and is used for hot water pipes?
Which metal does not corrode and is used for hot water pipes?
- Lead
- Iron
- Magnesium
- Copper (correct)
Why are carbon and hydrogen included in the reactivity series according to the text?
Why are carbon and hydrogen included in the reactivity series according to the text?
Based on the text, which metal reacts vigorously with water and steam?
Based on the text, which metal reacts vigorously with water and steam?
How do scientists determine the order of reactivity of metals according to the text?
How do scientists determine the order of reactivity of metals according to the text?
In terms of reactivity, which two metals are suitable for food cans?
In terms of reactivity, which two metals are suitable for food cans?
Why is it important to arrange metals according to their reactivity as mentioned in the text?
Why is it important to arrange metals according to their reactivity as mentioned in the text?
Which metal reacts violently with cold water to form sodium hydroxide and hydrogen gas?
Which metal reacts violently with cold water to form sodium hydroxide and hydrogen gas?
What is the product of the reaction between magnesium and cold water?
What is the product of the reaction between magnesium and cold water?
Which metal reacts slowly with cold water to produce hydrogen gas and its hydroxide?
Which metal reacts slowly with cold water to produce hydrogen gas and its hydroxide?
What happens when a metal reacts with steam, as described in the text?
What happens when a metal reacts with steam, as described in the text?
Which metal reacts explosively with steam, and therefore, should not be used in a school laboratory?
Which metal reacts explosively with steam, and therefore, should not be used in a school laboratory?
What is the main product of the reaction between sodium and cold water?
What is the main product of the reaction between sodium and cold water?
Which metal produces hydrogen gas that can catch fire and explode when reacting with water?
Which metal produces hydrogen gas that can catch fire and explode when reacting with water?
What is the product of the reaction between calcium and water?
What is the product of the reaction between calcium and water?
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Study Notes
Reactivity Series Overview
- Least reactive metal: Gold
- Most reactive metal: Potassium
Corrosion and Metal Use
- Metal that does not corrode: Copper, commonly used for hot water pipes.
Inclusion of Carbon and Hydrogen
- Carbon and hydrogen are included in the reactivity series to compare metals' reactivity with non-metals and to assess reduction processes in metal extraction.
Reactivity with Water
- Metal that reacts vigorously with water and steam: Sodium.
- Metal that reacts violently with cold water producing sodium hydroxide and hydrogen gas: Sodium.
Determining Reactivity Order
- Scientists determine the order of reactivity of metals through experiments involving reactions with water, acids, and oxygen, observing the intensity and speed of reactions.
Metals Suitable for Food Cans
- Two metals suitable for food cans due to their low reactivity: Tin and aluminum.
Importance of Reactivity Arrangement
- Arranging metals according to reactivity is crucial for predicting reactions, safe handling, and choosing materials for specific applications.
Slow and Explosive Reactions
- Metal that reacts slowly with cold water to produce hydrogen gas and its hydroxide: Magnesium.
- Metal that reacts explosively with steam: Potassium, unsuitable for school laboratories.
Reaction Products
- Main product of the reaction between sodium and cold water: Sodium hydroxide and hydrogen gas.
- Reaction product of calcium and water: Calcium hydroxide and hydrogen gas.
- Hydrogen gas produced by certain metals can catch fire and explode upon reaction with water.
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