Thursday, 1 June 2017

A density

7. Calculate the density of each of your mineral sample. How could you use the densities to identify the minerals?
Ans: Yes because if density is the same, it will be the same type of mineral.

key concept would density or color be more useful in identifying a particular mineral? Explain your answer.
Ans: Color is useful because a color is easily observed, but not always a reliable characteristic for the identification of minerals. 
         Density is useful because Each mineral has a characteristic density (density does not vary with the size of the mineral). 

Wednesday, 24 May 2017

writing assignment

Acid rain

Acid rain effect on the environment so it have a lot of effects but today I will tell you some parts. It can be harmful to fish and other wildlife. As it flows through the soil, acidic rainwater can leach aluminum from soil clay particles and then flow into streams and lakes. The more acid that is introduced into the ecosystem, the more aluminum is released.