Confirmatory Tests for Cations & Anions prepared by alex teoh / Update: 29 Dec 2004-2205 h / 1st pub: 7 Sep 2001 @ CHIJ-St Joseph’s Convent Test for CATions * All cations must be present in aqueous states before tests can be conducted.. CATion ammonium zinc Reaction with aqueous Sodium Hydroxide NO ppt. Ammonia gas produced on warming. White ppt. [y] Soluble in excess aq. NaOH to form a colorless solution. [z] Zn2+ + 2OH- Zn(OH)2 (white ppt) Zn(OH)2 + 2OH- [Zn(OH)4]2- (aq) White ppt
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I have always been against the use of all illegal drugs including marijuana‚ but while researching this topic‚ I have learned a lot about some of the positives of legalizing marijuana use. Considering it is classified as an illegal controlled substance‚ I have always been under the assumption that marijuana was bad for people‚ no matter what my friends may have said about how good it was. I was peer pressured into trying it when I was fourteen. I knew right away that it was not for me. It made
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development of successful organizations. Much contribution could be given to those who follow transformational leadership qualities and principles. Transformational leads inspire and result in positive progressive change within and throughout the company. Of course‚ there are positive and negative aspects that follow. Recent researchers have spent efforts to understand the relationship of leader and follower. However‚ even when weighing-the- cost companies can not complain that their overall
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involves using a nichrome wire loop to introduce a sample into a quiet blue Bunsen flame. Many cations show characteristic colours. The nichrome wire is easily contaminated and was cleaned by dipping it into concentrated hydrochloric acid and heating vigorously with a roaring Bunsen flame. The wire is clean when it gives no colour with the flame. Result of flame testing cations: |Cation Tested |Colour of Flame
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25.1 Study Guide 1. Write down the electron configuration for the following atoms (see page 135 in your textbook): Mg Ne Zn 2. Which elements have the following electron configurations? a. 1s22s2 b. 1s22s22p63s23p1 3. Sketch the shape of the following orbitals: s p d 4. Define the term “quantum.” 5. Using the diagram of the atom‚ on the right‚ identify the following: a. Which arrow(s) indicate that electrons absorbed energy? b. Which arrow(s) indicate that electrons lost/emitted energy as
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They made other parties note that such failures could be the opening of new parties in the society. Next‚ they showed that there is nothing unbiased about a government’s policy. There are both positives and negatives found in an action the government takes. They stated that the governmental policy for the Republicans and Democrats helped railroads and wealthy industrialists in the Northeast‚ but damaged the farmers in the South and Great Plains. Some of
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Electron Microscopy The electron microscope is a very powerful microscope which can see things that normal microscopes cannot. There are 2 types of electron microscope: the transmission electron microscope and the scanning electron microscope. The sample must be in a vacuum so that no air bubbles are on the produced image and also because the electrons are absorbed by the molecules in the air‚ this means that the electron microscope cannot be used to look at living cells. The tissue is soaked
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catalog that will persuade customers to buy our product. You will also need to inform customers of the dangers of our waves. Task: You must design a catalog that will persuade the customers of Waves-R-Us to buy your products. Your catalog must have 1 page for each wave (radio waves‚ microwaves‚ infrared rays‚ visible light‚ ultraviolet rays‚ X-rays‚ and gamma rays). You should include the benefits of the particular wave as well as a picture that relates‚ Do not forget to include the risks of it
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Since the start of mankind‚ the human race has gone through many improvements but the biggest one is right now in 1830‚ the Industrial Revolution. Although there are many negatives the positives outweigh them. For example‚ Education‚ Modern inventions‚ and industrial production are all positives that are coming out of the revolution. As of right now we are the only country going through this phase and its great having all this technology make life easier like steam engine and springing jenny.
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pADVENTURES of an Atom By: Nicole Zemaitis Atom-Smallest particle of an element that retains the properties of the element. Scientific discovery is how the present day Atomic Theory was made up. The current atomic theory was formed by different scientists over many years‚ each scientist building on or proving theories wrong. Democritus 460-370 B.C. Narrative: Hello! My name is Anna the Atom. I’m writing to you to describe
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