A 5.00 g sample of a pure substance powder is heated, and the powder leaves 4.63g of a shiny, metallic liquid. Is the powder an element or a compound? Explain

compound

Explanation:

We already know that the original substance was pure. If this substance was pure and it was powdery in nature then we have a footing to start from.

Secondly, a 4.93 g of shinny metallic liquid was left behind. This shinny metallic liquid must be an element.

Since there was a loss in mass during heating, it follows that there were other components of the pure powder.

If the reasoning stated above is correct, then the substance is a compound.

can you attach a picture of the lettuce? : )

it's c. elements are placed in rows based on how may valencies electrons have.