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<eqnpairs>
  <author></author>
  <institution></institution>
  <comments></comments>
  <background></background>
  <template id='standard triangular jigsaw 18' center-margin='15.00' top-margin='15.00' right-margin='15.00' bottom-margin='15.00' width='210' height='297' scale='1.00' orientation='portrait'/>
  <gui-settings>
    <active-view view-id='output'/>
    <active-option view-id='input' option-id='input.paired.10'/>
    <active-option view-id='output' option-id='output.normal size'/>
    <active-option view-id='solution' option-id='solution.full version'/>
    <active-option view-id='table' option-id='table'/>
  </gui-settings>
    <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Current</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>An electric current is a flow of electric charge.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Chemical reaction</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>A process that leads to the chemical transformation of one set of chemical substances to another.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Diode</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext></mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Element</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>each of more than one hundred substances that cannot be chemically broken down into simpler substances and are primary constituents of matter.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Concentration</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>the amount of a substance per defined space. (often measured as mol/dm3 or g/dm3)</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Resistance</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>the degree to which a substance or device opposes the passage of an electric current, causing energy dissipation.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Gas</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>One of the states of matter with the most amount of energy.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Electron</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>a stable subatomic particle with a charge of negative electricity.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Charge</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>the property of matter that is responsible for ellectricity existing in a positive or negative form.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Thermistor</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>A resistor that is sensitve to temperature changes.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Compound</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>A substance consisting of atoms or ions of two or more different elements in definite proportions joined by chemical bonds into a molecule.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Frequency</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>the number of wave cycles passing a point per unit time</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Atom</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>the smallest particle of a chemical element that can exist.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Density</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>A measure of the compactness of a substance, which is equal to the amount of mass per unit of volume</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Power</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>Power is a measure of how quickly energy is transferred. The unit of power is the watt (W).</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Cell</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>Small part of a living organism.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Particle</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>Something that makes up something bigger.</mtext>
  </mrow>
</math>
  </eqnpair>  <eqnpair>
<math display = 'block'>
  <mrow>
    <mtext>Wavelength</mtext>
  </mrow>
</math>
<math display = 'block'>
  <mrow>
    <mtext>The distance between two successive crests or troughs of a wave.</mtext>
  </mrow>
</math>
  </eqnpair>
</eqnpairs>
