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Questions and Answers
What happens to the reactivity of alkali metals as you move down the group?
What happens to the reactivity of alkali metals as you move down the group?
Why are alkali metals stored in oil?
Why are alkali metals stored in oil?
What is produced when alkali metals react with water?
What is produced when alkali metals react with water?
Which alkali metal is hardest to cut?
Which alkali metal is hardest to cut?
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Why are alkali metals categorized as 'alkali'?
Why are alkali metals categorized as 'alkali'?
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What characteristic is NOT true for group 1 metals?
What characteristic is NOT true for group 1 metals?
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What does the reactivity of alkali metals increase with?
What does the reactivity of alkali metals increase with?
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Why is the reactivity of alkali metals described as vigorous when reacting with water?
Why is the reactivity of alkali metals described as vigorous when reacting with water?
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What effect does the oxidation have on the surface of alkali metals?
What effect does the oxidation have on the surface of alkali metals?
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What is a characteristic feature of the melting and boiling points of alkali metals?
What is a characteristic feature of the melting and boiling points of alkali metals?
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Which of the following statements regarding the reactivity of alkali metals is true?
Which of the following statements regarding the reactivity of alkali metals is true?
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Why do alkali metals also appear shiny when freshly cut?
Why do alkali metals also appear shiny when freshly cut?
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What is primarily produced when alkali metals react vigorously with water?
What is primarily produced when alkali metals react vigorously with water?
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What phenomenon leads to the increased reactivity of alkali metals as one moves down the group?
What phenomenon leads to the increased reactivity of alkali metals as one moves down the group?
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Study Notes
Alkali Metals Summary
- Alkali metals are a group of chemical elements in the periodic table.
- Lithium (Li), Sodium (Na), and Potassium (K) are examples.
- These metals are hard to cut, and are typically silvery-gray, becoming shiny when cut.
- Lithium is the hardest to cut, followed by sodium, and potassium is the easiest to cut.
- The metals are soft.
- The surface of the metal dulls when exposed to air or oxygen.
- Alkali metals are highly reactive elements.
- Reactivity increases as you move down the group.
- The elements in the alkali metal group are similar to each other.
- They all have low melting points and boiling points.
- They all have low densities.
Reaction with Water
- Lithium, sodium, and potassium all react vigorously with water.
- The reaction produces hydrogen gas and a metal hydroxide (which is an alkali).
- Alkali metals are stored in oil to prevent them from reacting with oxygen and water vapor in the air.
- Reactivity increases as you move down the group.
- The added electron shells decrease the force of attraction between the nucleus and the outer electrons, easily lost.
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Description
Explore the fascinating world of alkali metals, including lithium, sodium, and potassium. This quiz covers their properties, reactivity, and behavior when interacting with water. Test your knowledge of these unique chemical elements and their significance in the periodic table.
