[pic] Inorganic ions ➢ Inorganic ions are important for the structures and metabolism of all living organism ➢ An ion is an atom or a group of atom which has overall electric charge. ➢ Inorganic ion are water soluble |Ions |Roles/Functions | |Calcium (Ca2+) |Make teeth and bones | |
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phosphorus atom. A) 4‚ 2 B) 2‚ 4 C) 2‚ 3 D) 4‚ 3 E) 0‚ 3 2-There are __________ paired and __________ unpaired electrons in the Lewis symbol for a phosphorus atom. A) 4‚ 2 B) 2‚ 4 C) 2‚ 3 D) 4‚ 3 E) 0‚ 3 3- How many unpaired electrons are there in an ion? A) 0 B) 1 C) 2 D) 3 E) This cannot be predicted. 4-What is the electron configuration for the ion? A) B) C) D) E) 5- How many single covalent bonds must a silicon atom form to have
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questions on arranging in proper sequence. One question on Scientific Method and the other on increasing complexity (atoms…….biosphere) Chapter 2. a. Questions on atomic structure: I
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particles called atom. He tried to break down matters into smallest particles. His model was that the matter would stop splitting in halves when it reaches its smallest matter. He called that an atom. * John Dalton In 1803‚ John Dalton proposed a theory. The theory had 4 parts into it. 1. Elements are made of identical atoms. 2. Atoms of different elements are physically different 3. Compounds are formed by a combination of two or more different kinds of atoms. 4. A chemical
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BIOLOGY LABORATORY Biologically Important Molecules Carbohydrates‚ Proteins‚ Lipids‚ and Nucleic Acids Objectives In this lab you will learn to: 1. Perform tests to detect the presence of carbohydrates‚ lipids‚ proteins‚ and nucleic acids 2. Recognize the importance of a control in a biochemical test 3. Use biochemical tests to identify an unknown compound Introduction Organic molecules are those primarily made up of carbon‚ hydrogen and oxygen. The common organic compounds of living
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In the past benzene was obtained from the distillation of coal in the absence of air. Today most benzene is made syntheticallyfrom petroleum products. The benzene is a closed ring of six atoms connected by bonds that resonatebetween single and double bonds; each carbon is also bound to a single atom. Benzene isinsoluble in water but mixes in all proportions with organic . Benzene is itself an excellentsolvent for certain and for most simple organic chemicals. It is one of the most commonly
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Name two properties of this polymer. e) Name two uses for this type of polymer. 4. a) What is addition polymerisation? b) Polyethylene is an example of an addition polymer. Describe what happens to the ethene molecule during this process. c) The mechanism of addition polymerisation consists of three steps. Name each step and give a brief description of each. 5. a) What is condensation polymerisation? b) Where is condensation polymerisation
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Atoms are a part of our everyday life. Even though people might not realize it‚ they contribute to more things than people may think. From small things such as a small pebble‚ to something huge‚ like a castle. They inhabit our lifes in more way than one. Atoms make up everything around us from the air we breathe to food we eat and even the stars in the sky. The average layman does not know much about the atom but in this paper I will explain what and why they are. The word atom comes from the Greek
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to the best answer on your Scantron form #882. 1. The __________ and __________ contribute most to the mass of an atom‚ while the _____________ determines the atom’s chemical behavior. A. B. C. D. E. proton‚ neutron‚ electron proton‚ electron‚ neutron neutron‚ electron‚ proton proton‚ photon‚ neutron none of the above 2. The symbol 63 Cu represents an isotope of the element copper. Give the following values: atomic 29 number‚ mass number‚ number of neutrons‚ number of electrons‚ and number
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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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