Research the answers to the following questions on the internet and write your answers in your own words. For each answer‚ include the address of the web site (or title and author of a book or article) that you used to help you answer the question. Which type of compound usually has higher melting points: ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points) Link: http://misterguch.brinkster.net/covalentcompounds.html Answer: Ionic compounds
Free Ionic bond Chemical bond Covalent bond
decomposed in the process. Electrode a rod or plate where electricity enters or leaves electrolyte during electrolysis. Reactions occur at electrodes. Discharge the removal of electrons from negative ions to form atoms or the gain of electrons of positive ions to become atoms. Anode positive electrode connected to positive terminal of d.c. source. Oxidation occurs here. Anode loses negative charge as electrons flow towards the battery‚ leaving anode positively
Premium Electrolysis Ion Hydrogen
Lab O6 – Equilibrium Lab Application Purpose: An introduction to the qualitative aspects of chemical equilibrium. Starting with a reaction at equilibrium‚ one will change the concentration of various ions present in the equilibrium‚ and record the states of the changing equilibrium through observation. Theory: Equilibrium- the point at which a solution has become perfectly saturated; when their forward and reverse reaction rates are equal Concentration- a measurement of how much solute
Premium Chemistry Ion Potassium
Points Which subshell letter corresponds to a spherical orbital? A.f B.d C.p D.s E.not enough information Answer Key: D Question 3 of 23 2.0/ 2.0 Points Consider the electron configuration of the ion to determine which ion shown below has an incorrect ionic charge? A.Se2- B.Ba2+ C.Al3- D.Rb+ E.none of the above Answer Key: C Part 2 of 8 - 4.0/ 6.0 Points Question 4 of 23 0.0/ 2.0 Points The correct Lewis structure
Free Ionic bond Chemical bond Ion
c) to the right 4. Remove the CO2 gas being produced 5. concentrations and totals in equilibrium change over time. 6. a) The solution will be yellow. K2CrO4 ( K2+(aq) + CrO42-(aq) b) The solution will be orange. The hydrogen ion will react with chromate to form an equilibrium and produce some dichromate and water. This reaction will cause the amount of chromate to decrease in order to form more products and the equilibrium will shift to the right. c) The NaOH‚ specifically
Premium Color Acid Hydrogen
shift is basically an exchange of chloride ions through the capillaries of the system circuit. In the blood plasma‚ there is large amount of carbonic acid and when there is an increase in carbonic acid than the balance of hydrogen ions and carbonate ions dissociate to maintain a balance of homeostasis in the pH of the blood. The red blood cells help to maintain this system by buffering the system of carbonic acid and causing detachment of the above ions. The release and detachment is buffered by
Premium Carbon dioxide Bicarbonate Ion
Then determine whether the atom is paramagnetic or diamagnetic. 7. Determine which of the species shown below are isoelectronic with neon‚ then decide which one of those would have the smallest radius. Oxide ioin Argon Magnesium ion Chloride ion Beryllium ion 8. Give the formal charge for each of the noted atoms in the following Lewis structure. 9. Consider the compounds HBr‚ H2‚ and KBr. List the type of bonding of each. Show your calculation. 10. Draw the Lewis structure for the
Free Atom Electron Ion
to determine unknown ions present in chemical samples by observing and analyzing results from various reactions of the sample with chemicals. Qualitative analysis is done through a series of steps. It is usually divided into two parts‚ namely: the preliminary and confirmatory tests. Preliminary tests are done to eliminate ion choices‚ while confirmatory tests are done to confirm the actual ions present in the sample. Qualitative analysis was done to identify the ions present in a given unknown
Premium Ion Chemistry Sodium
____Ne 3s1______________________________________________ K _______Ar 4s1___________________________________________ Rb _______Kr 5s1___________________________________________ 2. Write the electron configuration for strontium and the strontium(II) ion. Sr ___________ 1s2 2s2p6 3s2p6d10 4s2p6 5s2 ______________ Sr2+ ______________ 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 ____________________ 3. Name the colors in visible light‚ beginning with that of highest energy (shortest wavelength). Red
Premium Ion Chemistry Atom
determining solubility‚ measuring acidity and basicity. Pre-Lab Discussion A salt is an ionic compound containing positive ions other than H+ and negative ions other than OH-. Most salts will dissociate to some degree when placed in water. In many cases‚ ions from the salt will react with water molecules to produce hydronium ions (H3O+) or hydroxide ions. Any chemical reaction in which water is one of the reactants is called a hydrolysis reaction. Salts are generally formed from the
Premium Acid PH Ammonia