Tuesday, 6 June 2017

Stony lab


Stony Lab





  


Lab

Today's lab is very interesting for me because I never try this experiment before so I have to find the mass by old scales and then I put the stone in a beaker that already has 250 ml.Then I use a cylinder to get some water that is more than 250ml.Finally, I find the density.

7. Calculate the density of each of your mineral samples.How could you use the densities to identify the minerals?


I find the mass first because it is the easily way to find because it uses scales to find.Then I use the method that finds the volume by displacement.Finally, use the density to find it by density is equal to mass over volume. 


Key Concept Would density or color be more useful in identifying a particular mineral?Explain your answer.


Density is very useful in physic because when we have to find the particular mineral we have to use this because it is the easy way to find.Moreover, each mineral has different density and this is the method to classify each mineral.

Color is probably the easiest property to observe. Unfortunately, you can rarely identify a mineral only by its color. Sometimes, different minerals are the same color. For example, you might find a mineral that is a gold color, and so think it is gold. But it might actually be pyrite, or “fool's gold,” which is made of iron and sulfide. It contains no gold atoms.

 Refernce

https://www.ck12.org/book/ck-12-earth-science-for-middle-school/section/3.2/