Science

11. Perform the Mohs hardness test on all of the samples in your set; determine which is the hardest and softest.

f. Explain how to dry and store different types of stone in a way that will effectively energise them.

The color of a mineral when it is powdered is called the streak of the mineral.

At the beginning of Salt: A World History, the author, Mark Kurlansky, describes a pink rock he got in Spain. However, this rock is not just any ordinary rock. The rock was almost completely pure salt, with only a small bit of magnesium. It had many unique qualities, which fascinate the author. Firstly, white crystals started appearing on the pink after rain fell on the rock. The rock also produced brine puddles in humid weather. Yet, it never seemed to get any smaller. When the author placed the rock on a small copper tray, the rock produced a green crust that polished the copper. At first sight, the author thought the rock was just like any other, but after only a couple days, he knew it was something special.

What was scientifically valuable and informative about the Kennedy Gold Mine, was all the labeled rocks in display cases. If visitors looked close enough outside; they might come across some of the rocks from inside. For example, there was a lot of slate near the mine.

A mineral is an organic solid that has a crystal structure and a chemical composition that is definite. There are several ways that you can classify minerals. The characteristics include: naturally occurring, generally inorganic, solid substance, orderly crystalline structure, or definite chemical composition that varies.

detected. These trends are important in in determining the quality of water such the mineral

The fourth rock I chose is Psilomelane. Psilomelane’s chemical formula is (Ba1H2O) 2Mn5O10. Psilomelane is an important ore of manganese which

Minerals can indicative of environmental condition when these rocks formed. For instance, olivine and pyroxene, two primary minerals in basalt. Scientists are able to study more about the role of water to form these minerals. For instance, gypsum is a mineral which is contain calcium, sulfur, and water. Anhydrite is a calcium and sulfur mineral without water in its crystal structure. CheMin is able to identify the two. Also, minerals are linked to specific environments and CheMin can search for minerals that indicative of a past Martian environment and then

If the crude trimyristin were a white solid, would you have used norite? Explain. We wouldn’t have used norite because it is only used for colored impurities. 4.

Ca concentration of 3.7 mg/L, Mg concentration of 1.4 mg/L and a total hardness of 15

In this lab these unknown solid samples has similar physical properties. Each group had a compound and they made an experiment on these compound to find the same compound from other groups. Giving these samples and test it by examine and determined by physical and chemical properties. The first test is to determine the physical characteristics and examine it by a magnifying glass and record the results.

1) Calcite and halite share many similarities such as being white to transparent, having three cleavage points, and also has roughly the same hardness (calcite has a hardness of three whereas halite has a hardness of 2.5). However, there are also some ways to differentiate between the two. One way to do this, although it is not highly recommended to do this without proper identification, is to taste it. Halite has a salty taste since it is salt. Another way to know what mineral is calcite and which mineral is halite is by looking at their cleavage points. Calcite has rhombohedral cleavage planes (75°) while Halite has a cubic cleavage point (90°).

Gold is a soft metal, it’s both malleable and ductile.A single ounce of gold can be stretched out into a gold thread, 5 miles long. Gold is also a heavy metal, with a density of 19.3 g/cm. The purpose of this paper is to prove whether or not the gold crown is real gold or it’s made out of some other material. I believe that the crown is real Gold, the tests conducted will help prove whether my hypothesis is right or wrong.

There are many ways to identify unknown elements, such as the methods used in this lab like density, conductivity and reactivity. However, there are many different types, one of which is mass spectrometry and another is x-ray spectroscopy.