Respuesta :

Answer:

This makes Helium

element./ Pure substance

Explanation:

The gas used to fill party balloons contain only helium atoms this makes helium.....A Pure substance/element.

The following point explain this statement :

  • Helium can't be separated and broken down into other kind of matter , so its pure substance.
  • The balloon  contain very small particles known as helium atoms.
  • Helium exist in gaseous form at room temperature .

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