2837127
Beschreibung
Quiz von Peter Hoskins, aktualisiert more than 1 year ago
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Erstellt von Peter Hoskins
vor mehr als 9 Jahre
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Frage 1
Frage
Chlorine occurs naturally as two isotopes.
Chlorine contains 75% chlorine–35 and 25% chlorine–37.
Calculate the Relative Atomic Mass of chlorine
Antworten
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35
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36.2
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35.5
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36
Frage 2
Frage
Which of these is true regarding covalent bonding:
Antworten
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Takes place between non-metals
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Involves sharing of electrons
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An example of a covalent compound is methane
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All of these answers
Frage 3
Antworten
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Metallic bonding
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Ionic bonding
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Covalent bonding
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Isotropic bonding
Frage 4
Frage
In order to form calcium chloride:
Antworten
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The calcium atom loses two electrons
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Two chlorine atoms each receive one electron
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One Ca2+ and two Cl- ions are formed
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All of these answers
Frage 5
Frage
The magnesium ion is:
Antworten
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Mg2+
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Mg+
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Mg2-
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Mg-
Frage 6
Frage
In sodium chloride the following ions are formed:
Antworten
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Na- Cl-
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Na- Cl+
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Na+ Cl-
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Na+ Cl+
Frage 7
Frage
Which of these facts about solid sodium chloride is false:
Antworten
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It has a high melting point
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It has a high boiling point
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It conducts electricity
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The ions are held together by electrostatic forces
Frage 8
Frage
Ionic bonding involves:
Antworten
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Sharing of electrons between atoms
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Atoms gaining or losing electrons and becoming neutral overall
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Atoms gaining or losing electrons and becoming charged overall
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The loss or gain of protons
Frage 9
Frage
The formula for magnesium oxide is:
Antworten
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Mg2O
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MgO2
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MgO
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Mg2O3
Frage 10
Antworten
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The same number of protons
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The same number of neutrons
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The same mass number
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Different numbers of electrons
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