Science Focus 2 - Chapter Tests - Pearson Australia Media Resources
Science Focus 2 - Chapter Tests - Pearson Australia Media Resources
Science Focus 2 - Chapter Tests - Pearson Australia Media Resources
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<strong>Science</strong> <strong>Focus</strong> 2 TEST<br />
<strong>Chapter</strong> 2: Atoms<br />
64<br />
13 Copper may be denoted by 29 Cu<br />
Calculate how many of each of the<br />
following are in one atom of copper.<br />
a Neutrons.<br />
b Electrons.<br />
c Protons.<br />
89<br />
14 Yttrium may be denoted by 39 Y<br />
Calculate the<br />
a mass number of yttrium.<br />
b atomic number of yttrium.<br />
15 An atom of oxygen contains 8 electrons.<br />
Calculate the number of electrons in<br />
the<br />
a innermost shell of an atom of<br />
oxygen.<br />
b outer shell of an atom of oxygen.<br />
.<br />
.<br />
© <strong>Pearson</strong> Education <strong>Australia</strong> (a division of <strong>Pearson</strong> <strong>Australia</strong> Group Pty Ltd) 2005.<br />
This page from the <strong>Science</strong> <strong>Focus</strong> 2 Teacher’s Resource may be photocopied for classroom use.<br />
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