A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 6
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Figure 1 shows the sub-microscopic diagrams of five different substances in five boxes, labelled A, B, C, D, and E.

Five boxes containing different arrangements of white circles and black circles, representing atoms of two different elements. Box A contains four diatomic molecules, each consisting of two bonded white circles. Box B contains four molecules, each consisting of one central black circle bonded to three white circles. Box C contains three diatomic molecules of two bonded white circles and three diatomic molecules of two bonded black circles. Box D contains two diatomic molecules of one black circle bonded to one white circle, and two diatomic molecules of two bonded white circles. Box E contains two molecules of one black circle bonded to one white circle, and two molecules of one black circle bonded to two white circles.

Using Figure 1:

a.

Which box represents a single, pure compound?

[1]
b.

Which box represents a mixture of elements?

[1]
c.

Which box represents a mixture of an element and a compound?

[1]

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes