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chemistry igcse acapprinted 38 · PDF 38
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• Chromium (Cr)
etc.
Their physical properties include:
• Having high melting/boiling points.
• Having high density.
• Being hard/strong.
Their chemical properties include:
• Showing variable oxidation states
• Forming coloured compounds.
• Being used as catalysts in reactions.
P2:
Q1. Which statements about the position of the elements in the periodic table are correct?
Elements in the same group have similar chemical properties.
Elements in the same period have similar chemical properties.
Elements in the same group have the same number of electron shells.
Elements in the same group have the same number of outer shell electrons.
1 and 3
1 and 4
2 and 3
2 and 4
Q2. Which statements about transition elements are correct?
They have a low density.
They form ions with variable oxidation numbers.
They have a high melting point.
They form only colourless compounds.
1 and 2
1 and 4
2 and 3