The Iron / Sulfur Demo
Purpose: To observe different forms of matter and changes of matter
Observations / Analysis:
1) Sulfur is an example of an _______________________. Iron is also an example of an _______________________.
All elements have _________ _____________________. Iron’s one identity is called the ________________ _________________.
Sulfur’s one identity is called the ________________ _________________.
2) Listed below are some of sulfur’s physical properties:
3) Listed below are some of iron’s physical properties:
4) Notice that the iron is not shiny anymore. This is because it has the ________________________ property of being easily _______________________ by oxygen in the air.
5) Hydrochloric acid is an example of a ________________________ mixture, which is also known as a ________________________. These types of mixtures are __________________________ throughout their composition. Hydrochloric acid is a mixture of ________________________ which is a _______________________, and ________________________ which is also a _________________________.
It is important to note that all ___________________________mixtures have __________________________________________.
In this mixture the two identities are _______________ ______________________________ and _______________ ______________________________
6) Iron has the ______________________ property of ______________________ with hydrochloric acid, which forms a new________________. Formation of this gas is proof that this reaction is a ___________________change, which means that the ________________________________ of the substances are _________________________.
7) Sulfur ____________________________________________with hydrochloric acid.
8) Mixing the iron and sulfur together is an example of a ________________________ change, because when they are mixed their ____________________________ do not _______________________.
9) The iron sulfur mixture is a _________________________________mixture, because it is not _______________________ throughout its composition.
It is important to note that all________________________ mixtures have _________________________________________________.
In this mixture the two identities are _______________ ______________________________ and _______________ ______________________________
10) When the iron and sulfur mixture was heated, we noticed that the sulfur almost immediately began to ________________. This is an example of a ______________________ change, because when a substance _______________, it’s identity has not ____________________________.
11) As we continued to heat the tube of iron and sulfur, the inside of the tube looked _________________________, which was a sign that _______________________ was being released. This means that a ______________________change was taking place, which means that the ________________________________ of the substances are _________________________.
12) The final product of this reaction is called __________________________ and is a _________________________. It has a __________________color. All compounds have _________ ______________________. In this compound, the one identity is the ____________________________ ______________________ ________________.
13) The iron (II) sulfide was not _________________________, but it did react with ________________________________ to produce a _________________________. Production of this ______________proves that this reaction is a _____________________ change, which means once again that the ________________________________ of the substances are _________________________.