Iron sulfide is a compound ...
... of elements.
... tiny particles called atoms.
Iron and sulfur are examples ...
Elements are substances ...
... because it contains different atoms joined together.
Compounds are different from the elements they are made from ...
Iron sulfide is a solid at room temperature ...
Iron is used make bridges ...
All substance are made up of ...
... in terms of their properties.
Electricity can pass through iron ...
... because it is a conductor of electricity.
... because it is strong.
... are Fe and S.
Sulfur will turn from a liquid into a gas ...
The symbols of iron and sulfur ...
... that contain only one kind of atom.
... as its melting point is high.
... at its boiling point.
