* The first test was to determine the melting point of alum. The measured melting point that we got was 92.5 ℃. The literature melting point of alum is also 92.5℃. Also, during our flame test the flame turned purple which proved the presence of potassium ions.…
When atomic number along period three is plotted against the melting point, the melting point will increase until it reaches silicon then melting…
I and II only 2. melts at 119 C ◦ 1 dewees (vd866) – Exam review – dewees – (24127) 8. None of these 007 10.0 points Which of the properties I) conductivity II) combustability III) hardness are chemical properties? 2 to identify a type of matter?…
*It is useful for you to know the boiling and melting point of a substance so that you can know if…
If this lab if conducted properly, the unknown substance will be determined to be alum because of melting point, percent hydration and percent sulfate. The first test that will be run has the purpose of revealing the alum’s melting point. Melting is defined as, the temperature at which a solid turns into a liquid. The melting point will help determine if the substance is an alum if its melting point is around 92.5° because this is the accepted melting point of an alum.…
The melting point of a compound is the temperature at which the solid is in equilibrium with its liquid. A solid compounds changes to a liquid when the molecules acquire enough energy to overcome the forces holding them together. A mixture melting point is useful in confirming and used to indentify an unknown compound, which we will be doing in this particular experiment.…
The purpose of this experiment was to prepare benzil by first converting benzaldehyde to benzoin by the benzoin condensation, then oxidizing benzoin to benzil. The benzoin condensation was carried out using thiamine hydrochloride, or vitamin B1, as a catalyst.…
In the periodic table, Titanium is expressed “Ti” and is located in group 4 and period 4. Its Atomic Number is 22 and its density is 4.5 grams per cubic centimeter. This meaning it contains 22 protons, 22 electrons and 26 Neutrons. Titanium has a high resistance to high temperatures, it’s boiling point is at 3287°C and its melting point at 1668°C. Pure titanium is a lustrous white metal. Titanium is able to burn in air and it is the only…
Gallium has a soft texture; you can even cut gallium with a knife. It is silver in color and is also used in semiconductors and light diodes. Gallium would melt in a human’s hand. Now, gallium can be cooled also without turning into solid and that gives it this special property. The melting point of it is at 29.7 degrees Celsius, whereas its boiling point is at 2204. It is highly reactive with non-metals. It highly reacts with aids and alkalis. Gallium is a conductor which means that it is used in the production of many items, for example like smartphones, technological devices and is also responsible for the Wi-Fi everyone can’t live without! It is also used in LEDs and solar panels as well. The thing is that Gallium immediately converts the electricity into light. Another interesting thing is that Medical centers use gallium for the thermometers because Gallium is not toxic. One more thing to know about this important element is that it is obtained by electrolysis. Some more interesting facts about Gallium is that it gets used in Neutrino Observatory in Italy where they use it to study solar neutrinos. It is also used in the production of Lasers. Gallium is non-toxic…
The beryllium Melting point is 2,348F and the boiling point is 5,378F. Beryllium color is steel gray and the metal is brittle. Beryllium chemical behavior…
My element is Mercury,the atomic number is 80 and the atomic mass is 200.59.The symbol is Hg.Mercury comes from the greek name hydrargyrum which means liquid silver.The element is also known as quicksilver for its mobility. Named after the fastest-moving planet in the solar system, mercury has been known to humanity for ages.despite its toxic qualities, mercury can still be useful to us. The element conducts electricity and is used in electrical switches of thermostats and certain types of doze alarm-type alarm clocks.It can turn into liquid at room tempurature.It boils at 656.11 F.…
My element name is Boron. My slogan is my symbol is B! I 'm right at the top of Group IIIB! When the first time seen my element is in the PT. boron symbol is B and is in Group IIIB. Two of them are having B. It looks very simple. I think that is very fun idea, so I just use this for my slogan. Boron is a chemical element with chemical symbol B and atomic number 5. It is in period 2, Group 13 element that has properties which are nonmetals. The name boron comes from the Arabic and Persian words for borax. Boron was discovered by Sir Humphrey Davy, Joseph-Louis Gay-Lussac, and L.J. Thénard at 1808 in England, France. Boron exists in the earth 's crust to the extent of only about 10 ppm. Boron is solid and black. It is very hard and in extremely pure form is nearly as hard as diamond, but much too brittle for practical use. The atomic mass is 10.811g. Density is 2.34g/cm^3. Melting point is 3769︒F and boiling point is 7101︒F.Siilicon is the closely related elements with boron. Boron is used in pyrotechnics and flares to produce a green color. Boron has also been used in some rockets as an ignition source. Boron is used to control nuclear reactions. It is an excellent neutron absorber. Alloyed with steel or reacted with carbon, titanium or zirconium, it is used in control rods for nuclear reactors Boron is an essential nutrient for all green plants…
The Poem “Introduction to Poetry” is by Billy Collins, an English poet, and it is about how teachers often force students to over-analyze poetry and to try decipher every possible meaning portrayed throughout the poem rather than allowing the students to form their own interpretation of the poem based on their own experiences.…
Uranium is a mineral like no other. Urainum it has been responsible for the death of millions, but also for the benefit of millions. In today’s world, uranium is at the forefront of many controversies such as nuclear power plant failures, such as in Tokyo, and the worry over nuclear bombs being developed in the Middle East and North Korea. As the second largest producer of uranium in the world, Canada must play an active role in discussions about uranium. The uses of uranium, where and how much of it is found in Canada, the benefits of uranium production and the negative aspects of uranium mining are key factors in this debate.…
I am usually found around the middle part of the periodic table. I am found below Silver and between the two elements, Platinum and Mercury. I am placed in the d-block element section of the periodic table. My atomic number is 79 and the mass of my most stable isotope and is basically my atomic mass is 196.967. The type of phase that I am at room temperature is solid. I am the most malleable and ductile of all metals. If you take one gram of me and start beating me repeatedly with a hammer of some sort, you will soon end up with a sheet of one square meter. If you take one ounce of me, you will end up with 300 square feet.…