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

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Question 18
Easy

This question is about elements, compounds, and mixtures.

a.

Which type of substance is sulfur dioxide?

  • Element
  • Compound
  • Mixture
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b.

The diagrams in Figure 1 represent different substances using circle models.

◯\bigcirc◯ and ∙\bullet∙ represent atoms of two different elements.

Figure 1: Particle diagrams showing boxes W, X, Y, and Z.

Which diagram in Figure 1 represents a pure compound?

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c.

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

[1]
d.

State the method used to separate a mixture of different coloured pigments in a water-soluble dye.

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e.

A mixture containing three liquids with boiling points of 56∘C56^\circ\text{C}56∘C, 110∘C110^\circ\text{C}110∘C, and 138∘C138^\circ\text{C}138∘C is separated by fractional distillation. Which liquid distils and is collected last?

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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