6 groups in the periodic table
闪卡自测
What is Group 1 of the Periodic Table called?
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闪卡 1
问题
What is Group 1 of the Periodic Table called?
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答案
Group 1 is called the alkali metals.
闪卡 2
问题
Name the two products formed when sodium reacts with water.
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答案
The two products formed when sodium reacts with water are sodium hydroxide and hydrogen.
闪卡 3
问题
Give two properties of Group 1 metals.
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答案
Properties of Group 1 metals are:
闪卡 4
问题
Explain why the alkali metals share similar chemical properties.
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答案
The alkali metals share similar chemical properties because they all have one electron in their outer shell.
闪卡 5
问题
Write the word equation for the reaction between lithium and water.
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答案
lithium + water lithium hydroxide + hydrogen
闪卡 6
问题
Write the balanced symbol equation for the reaction between potassium and water.
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答案
The balanced symbol equation for the reaction between potassium and water is: 2K (s) + 2H2O (l) ⟶ 2KOH (aq) + H2 (g)
闪卡 7
问题
Lithium is added to water. What colour will universal indicator go if it is added to the solution?
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答案
If universal indicator is added to the solution it will go purple / blue.
闪卡 8
问题
Describe the trend in reactivity going down Group 1.
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答案
Going down Group 1, reactivity increases.
闪卡 9
问题
Give the electronic configuration of a potassium atom.
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答案
The electronic configuration of potassium is 2.8.8.1.
闪卡 10
问题
Apart from fizzing / effervescence, state two other observations that would be made when sodium is added to water.
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答案
闪卡 11
问题
True or False? The reactions of the alkali metals with water get more vigorous as you descend the group.
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答案
True. The reactions of the alkali metals with water get more vigorous as you descend the group.
闪卡 12
问题
Define the term ion.
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答案
An ion is an atom or molecule with a positive or negative charge due to the gain or loss of electrons.
闪卡 13
问题
Explain why reactivity increases going down Group 1.
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答案
Reactivity increases going down Group 1 because going down Group 1, the number of shells increases. There is less attraction between the outer electron and the nucleus so the outer electron is more easily lost.
闪卡 14
问题
Give the charge of the ions formed when a Group 1 metal loses an electron.
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答案
The charge of the ions formed when a Group 1 metal loses an electron is 1+.
闪卡 15
问题
True or False? The energy required to remove the outermost electron increases as you descend the Group 1 metals.
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答案
False. Less energy is required to overcome the force of attraction as it gets weaker, so the outer electron is lost more easily as you descend the Group 1 metals.