2837127
Descrição
Quiz por Peter Hoskins, atualizado more than 1 year ago
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Criado por Peter Hoskins
mais de 9 anos atrás
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Questão 1
Questão
Chlorine occurs naturally as two isotopes.
Chlorine contains 75% chlorine–35 and 25% chlorine–37.
Calculate the Relative Atomic Mass of chlorine
Responda
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35
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36.2
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35.5
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36
Questão 2
Questão
Which of these is true regarding covalent bonding:
Responda
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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
Questão 3
Responda
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Metallic bonding
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Ionic bonding
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Covalent bonding
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Isotropic bonding
Questão 4
Questão
In order to form calcium chloride:
Responda
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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
Questão 5
Questão
The magnesium ion is:
Responda
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Mg2+
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Mg+
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Mg2-
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Mg-
Questão 6
Questão
In sodium chloride the following ions are formed:
Responda
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Na- Cl-
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Na- Cl+
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Na+ Cl-
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Na+ Cl+
Questão 7
Questão
Which of these facts about solid sodium chloride is false:
Responda
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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
Questão 8
Questão
Ionic bonding involves:
Responda
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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
Questão 9
Questão
The formula for magnesium oxide is:
Responda
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Mg2O
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MgO2
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MgO
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Mg2O3
Questão 10
Responda
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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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