Answer:
This makes Helium
element./ Pure substance
Step-by-step 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 .