IONIC COMPOUNDS In chemistry‚ an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. Usually‚ the positively charged portion consists of metal cations and the negatively charged portion is an anion or polyatomic ion. Ions in ionic compounds are held together by the electrostatic forcesbetween oppositely charged bodies. Ionic compounds have high melting and boiling points‚ and they are hard and very brittle. Ions can be single atoms‚ as the sodium and chlorine in
Premium Ion Atom Chemical bond
Assignments in Science Class X (Term II) 4 Carbon and its Compounds IMPORTANT NOTES 9. Unsaturated organic compounds : Organic compounds in which a double or a triple bond exists between two carbon atoms in a carbon chain‚ are called unsaturated organic compounds. 10. Hydrocarbons : Organic compounds which contain only carbon and hydrogen atoms are called hydrocarbons. 11. Straight chain hydrocarbons : Hydrocarbons‚ in which all the carbon atoms are linked to one another in a straight chain
Premium Carbon Acetic acid Hydrogen
Run on Sentences Run on sentences are sentences that contain too many ideas without proper punctuation. Not all long sentences are run on sentences. It is perfectly acceptable to join several related ideas in one compound sentence. However‚ if you don ’t follow punctuation rules‚ a sentence can become a run on. A simple explanation of run ons and some examples of run on sentences should help to make this point clear. Components of A Sentence Each sentence has 3 necessary components 1. A subject:
Premium Sentence Dependent clause Syntactic entities
COORDINATION COMPOUNDS: * FLEXIDENTATE CHARACTER OF POLYDENTATE LIGANDS; * Poly dentate ligands have flexi dentate character in the sense that all donors atoms may not form coordinate bonds with the central metal atom or ion. For example; EDTA which is the hexa dentate ligand also acts as tetra dentate or penta dentate in certain complexes. Similarly sulphate ion‚ which is a bi dentate ligand‚ also acts as a mono dentate ligand in certain complexes‚ e.g. in [Co(SO4)(NH3)5]Cl. * LABILE
Premium Atom Chemistry Oxide
Elements and compounds are a result of the actions of the valence electrons. There are three types of bonds that I have learned about in the bonding comparison lab. These bonds include ionic‚ polar covalent‚ and non-polar covalent. Each of these bonds and the element compounds connected to them has individual solubility‚ conductivity‚ melting point‚ and volatility levels. The three element compounds that will follow are sodium chloride‚ sucrose‚ and p-dichlorobenzene. Sodium chloride is an ionic
Premium Ionic bond Covalent bond Ion
ASPIRANT FOR THE POSITION OF COMPOUND PREFECT Mr. Chairman‚ Honorable Headmaster‚ Members of Staff‚ Co-aspirant‚ Out-going Prefect‚ Fellow Student‚ Ladies and Gentlemen. Good day. I am very grateful for being given the chance to read my manifesto to you‚ as an aspirant for the position of compound prefect. I am Afful Christopher‚ a second year art student of this great institution. I am before you today‚ to solicit to your vote for the enviable position of a compound prefect for the 2013/2014 academic
Premium 2006 singles Chemical compound University
Andy Warhol Andy Warhol was an American artist who was a leading figure in the visual art movement known as pop art. His works explore the relationship between artistic expression‚ celebrity culture and advertisement that flourished by the 1960s. Andy Warhol was born on 6th August 1928 in Pittsburgh‚ Pennsylvania. He is known for his pop art and his work focuses of the crossover between celebrity‚ advertising and artistic expression. He worked with many forms of media‚ including: painting‚
Premium Andy Warhol Pop art
Tetrapyrrole compounds: chlorophyll and heme groups By Erwin Lim 1. Tetrapyrrole compounds A tetrapyrrole compound is a chemical group that consists of four pyrroles that are joined together by covalent bonds‚ forming a porphyrin ring. They are naturally occurring pigments‚ which are used in many biological processes (Berg‚ 2009). The basic structure of a tetrapyrrole is as seen in Figure 1‚ while the basic structure of a pyrrole is as seen in Figure 2. Figure 1.Tetrapyrrole Compound (Berg‚ 2009)
Premium Chlorophyll Oxygen
Maria Virgen5 Art Fundamentals Andy Warhol Born Andrew Warhola on August 6‚ 1928 in the city of Pittsburgh‚ Pennsylvania‚ Andy Warhol’s parents were Slovakian immigrants. His father‚ Ondrej Warhola‚ was a construction worker and his mother‚ Julia Warhola‚ was an embroiderer. They were devout Catholics who attended mass regularly‚ and maintained much of their Slovakian culture and heritage.At the age of 8‚ Warhol was diagnoised with Chorea a rare and sometimes fatal disease of the nervous system
Premium Andy Warhol Carnegie Mellon University
Carbon and Its Compounds Carbon: Introduction Atomic Number: 6 Electronic Configuration: 2‚ 4. Valence electrons: 4 Property: Non-metal Abundance:- Carbon is the 4th most abundant substance in universe and 15th most abundant substance in the earth’s crust. Compounds having carbon atoms among the components are known as carbon compounds. Previously‚ carbon compounds could only be obtained from a living source; hence they are also known as organic compounds. Bonding In Carbon:- The Covalent
Premium Acetic acid Oxygen Atom