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

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Question 16
Easy

This question is about elements, compounds and mixtures.

Figure 1 shows diagrams which represent the atoms and molecules in different substances.

Figure 1: Particles in boxes A, B, C, and D. Legend indicates three types of circles (shaded, black, and white) representing different types of atoms. Box A contains three diatomic molecules made of white circle pairs, and three single black circles. Box B contains four diatomic molecules made of white circle pairs. Box C contains four molecules consisting of one central black circle bonded to two white circles. Box D contains two compound molecules (one black circle bonded to two white circles) and three diatomic molecules made of shaded circle pairs.

a.

Which diagram in Figure 1 represents a pure element?

Select A, B, C, or D.

[2]
b.

Which diagram in Figure 1 represents a mixture of two elements?

Select A, B, C, or D.

[2]

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