Revise Chemical bonding and Chemical reactions.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a compound? | A combination of two or more elements bonded chemically.
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| Why do atoms combine to form compounds? | To have a stable (full) outer shell.
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| What are the two ways that atoms can combine to form compounds? | Ionic and Covalent bonding.
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| What is an ionic bond? | Ionic bonding is where one element give away an electron and the other takes it so both have full outer shells.
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| Why do compounds form ionic bonds? | Because both elements are unstable naturally and so come together to balance out.
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| What groups in the periodic table form ionic bonds together? | Group 1 and group 7.
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| How many electrons does sodium want to lose when it bonds with chlorine? | 1
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| How many electrons does magnesium want to lose when it bonds with oxygen? | 2
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| What is a covalent bonds? | A covalent bond is when two elements become joined to share electrons.
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| Why do compounds form covalent bonds? | An element with 4 electrons in its outer shell will bond with another element with 4 electron in its outer shell to share 8 electrons and become stable.
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| How many electrons does hydrogen want to share when it bonds covalently? Why? | 1 because it needs an extra one to gain a full outer shell of 2.
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| How many electrons does carbon want to share when it bonds covalently? | 4 so it fills to 8 up the outer shell.
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| What are the differences between ionic and covalent substances? | Ionic bonds give away an electron and covalent share electrons.
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Created by:
SC Dave
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