color of the flame spectra bands for each water sample. Use the Flame Spectra Chart and Symbol table below to identify the elements (metals) in the different water samples. Symbol Name Cd Cadmium Li Lithium Na Sodium K Potassium Rb Rubidium Cs Cesium Hg Mercury Ne Neon Sample Number of Bands Colors Present in Spectrum Probable Elements In Sample Spring Water Sample 8 Violet‚ Green‚ Yellow‚ Red Sodium‚ Potassium Bottled Water Sample 2 Yellow
Premium Water Color Bottled water
of water? 3. A chemist dissolves 3.50 g of potassium iodate and 6.23 g of potassium hydroxide in 805.05 g of water. What is the percentage concentration of each solute in the solution? 4. A student wants to make a 5.00 % solution of rubidium chloride using 0.377 g of the substance. What mass of water will be needed to make the solution? 5. What mass of lithium nitrate would have to be dissolved in 30.0 g of water in order to make an 18.0 % solution? 6. What mass of cobalt(II)
Premium Ammonia Concentration Sodium
alarm clocks.It can turn into liquid at room tempurature.It boils at 656.11 F. Mercury is the only metal that is a liquid at standard temperature and pressure. The only other liquid element under standard conditions is bromine‚although the metals rubidium‚ cesium‚ and gallium melt just warmer than room temperature. Mercury has a very high surface tension‚ so it forms rounded beads of liquid.
Premium Nuclear fission Nuclear power Uranium
1. Sodium and potassium are the most frequently ecountered alkali metals‚ though rarely as the metal. Why these elements are rarely found as the metal? (Refer to the relative measurements tabulated in the form of electronegativities‚ ionization energies‚ or reduction potentials). These are due to the fact that their outer most orbital (ns1 valence electron configuration) has tendency to lose electron very easily and make stable configuration. The single valence electron is relatively far from the
Premium Oxygen Water Chemistry
bothered. There were only six energy levels That are formed together to make cesium so helpful. More isotopes than any other‚ it has thirty-two Those who lived without it are numbered very few. While cesium frequently is combined with rubidium‚ It is also crushed and heated with sodium. Cesium was found in 1860 by Robert Kirchoff and Robert Wilhem Man am I so blessed that God made these men. Zero‚ in fact‚ are they‚ even for Earth’s crust‚ Cesium is found three Milligrams per kilograms
Premium Atom Water Chemical element
are not broken down by type on the actual AP exam. Score one point for correct reactants and 2 points for correct products. I. DOUBLE REPLACEMENT Solubility rules that apply to water solution: (1) All alkali metal (lithium‚ sodium‚ potassium‚ rubidium‚ and cesium) compounds are soluble. (2) All acetate‚ ammonium‚ chlorate‚ and nitrate compounds are soluble. (3)
Premium Chemistry Solubility Metal
combinations of some 100 chemical elements. The names of some of these elements will be familiar to almost everyone. Elements such as hydrogen‚ chlorine‚ silver‚ and copper are part of our everyday knowledge. Far fewer people have heard of selenium or rubidium or hassium. Nevertheless‚ all matter is composed of various combinations of these basic elements. The wonder of chemistry is that when these basic particles are combined‚ they make something new and unique. Consider the element sodium. It is a
Free Chemistry Chemical element Chemical reaction
many protons‚ electrons‚ and neutrons are in each isotope? (Chapter 4) a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123 (102) Write the complete electron configuration for each atom. (Chapter 5) a. fluorine b. lithium c. rubidium (103) Why do the elements magnesium and barium have similar chemical and physical properties? (Chapter 6) (104) Which of the following are transition metals: Cr‚ Cd‚ Ca‚ Cu‚ Co‚ Cs‚ Ce? (Chapter 6) (105) How can the periodic table be used to
Premium Periodic table Electron configuration Atom
functions. In addition to imaging‚ radionuclide therapy can be used to treat conditions such as hyperthyroidism‚ thyroid cancer‚ and blood disorders. 6. Common isotopes that are used in nuclear imaging include: fluorine-18‚ gallium-67‚ krypton-81m‚ rubidium-82‚ nitrogen-13‚ technetium-99m‚ indium-111‚ iodine-123 (pictured above)‚ xenon-133‚ and thallium-201. For therapy‚ yttrium-90 and iodine-131 are commonly used. Many radioisotopes are made in nuclear reactors‚ some in cyclotrons. Generally neutron-rich
Premium Nuclear medicine Medicine Radioactive decay
Strontium Nitrate also have similar affects to exposed skin and they are also oxidizers. III. Pre-Lab Questions- What are the group 1 elements called‚ they are called alkali metals. List the group one elements‚ Hydrogen‚ Lithium‚ Sodium‚ potassium‚ Rubidium‚ Cesium‚ and Francium. How many valence electrons does group 1 have‚ group 1 has 1 valence electron. When group one elements become ions what are is their charge‚ their charge is +1. What are the group 2 elements called‚ they are called the alkali
Premium Chlorine Metal Periodic table