Elements, compounds and mixtures 4

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Examines in detail the following figures where red, white and blue spheres represent atoms of oxygen, hydrogen and nitrogen respectively.

 

 

Select the figure which represents a simple mixture of two substances.

	Wrong. In this figure there is a mixture of molecules of two elements, hydrogen H2 and nitrogen N2, with ammonia molecules, NH3.
	Right. In this figure there is a mixture of molecules of two elements, hydrogen H2 y nitrogen N2.
	Wrong. In this figure there is a mixture of molecules of a compound, ammonia NH3 and one element hydrogen, H2.
	Wrong. In this figure there is a mixture of two compounds, water, H2O, and ammonia, NH3, with molecules of an element, H2.