1
Q
What do Group 2 elements react with oxygen to form?
A
metal oxide - MO
2
Q
What do Group 2 elements react with water to form?
A
1) alkaline hydroxide - M(OH)₂
2) hydrogen gas - H₂(g)
3
Q
What do metals react with dilute acids to form?
A
salt + hydrogen
4
Q
Does the reactivity increase/decrease down Group 2?
A
increase
5
Q
Why does the reactivity increase down Group 2?
A
1) loss of electrons to form +2 ions
2) ionisation energies decrease down the group - attraction between nucleus + outer electrons decreases
6
Q
What do Group 2 oxides react with water to form?
A
hydroxide ions, OH⁻
Chemistry OCR A-Level
flashcards
Decks in class (28)
# Cards
-
Chapter 234
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Chapter 355
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Chapter 464
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Chapter 546
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Chapter 661
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Chapter 772
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Chapter 86
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Chapter 940
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Chapter 1011
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Chapter 1123
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Chapter 1213
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Chapter 1323
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Chapter 140
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Chapter 153
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Chapter 160
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Chapter 176
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Chapter 1868
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Chapter 1932
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Chapter 2068
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Chapter 2143
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Chapter 2258
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Chapter 2319
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Chapter 240
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Chapter 2573
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Chapter 2678
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Chapter 2795
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Chapter 2823
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Chapter 2950
