Which of the following reactions does not involve ionic bonding?
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sodium + chlorine → sodium chloride
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sulfur and oxygen → sulfur dioxide
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iron and oxygen → iron oxide
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zinc and nitric acid → zinc nitrate and water
Q.2.
What is the ionic bond between sodium and chlorine?
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A pair of shared electrons
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The nucleus of the sodium atom sticks to the chlorine
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Particles called gluons attach the two atoms to each other
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An electrostatic charge holds them together
Q.3.
When sodium and chlorine react what happens to their electrons?
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One electron is transferred from the sodium to the chlorine
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One electron is transferred from the chlorine to the sodium
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The chlorine and the sodium share an electron
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Seven electrons are transferred from the chlorine to the sodium
Q.4.
Which of the following statements is correct about chlorine?
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Chlorine gas is poisonous
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Chlorine has six electrons in its outer energy level
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Chlorine's outer energy level is not full which means it is a reactive non-metal
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Chlorine forms a negative ion
Q.5.
Which sub-atomic particles are involved in chemical bonding?
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Neutrons
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Protons
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Electrons
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All of them
Q.6.
46g of sodium react with how much oxygen to produce 110g of sodium oxide?
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23g
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46g
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64g
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110g
Q.7.
Potassium is in the same group of the periodic table as sodium but lower down the group. This means what?
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Potassium is less popular
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Potassium has more electrons in its outer energy level
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Potassium will react more slowly
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Potassium will form ionic compounds with non-metals
Q.8.
Why is sodium a reactive metal?
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It has a low melting point
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It is silvery-grey in colour
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It has one electron in its outer energy level (electron shell)
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It has seven electrons in its outer shell
Q.9.
Magnesium is in group II of the periodic table. How many electrons would it transfer when it reacts with oxygen and what would the charge be on its ion?
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1 electron, +1 ion
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2 electrons, +2 ion
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3 electrons, +2 ion
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4 electrons +3 ion
Q.10.
When metals bond with non-metals what happens to their electrons?
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The metals lose electrons
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The metals gain electrons
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The metals share their electrons
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The metals keep the same number of electrons
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