Free Chemistry Essays and Papers

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  • Chemistry: Chemistry And Chemistry

    968 Words  | 4 Pages

    Zn (s) + Cu(NO3)2 (aq) → Cu(s) + Zn(NO3)2 (aq) (Eq. 2) Regarding, the copper and sodium chloride, no visible change occurred after 5 minutes had passed. The copper metal remained at the bottom of the test tube undeterred by the NaCl. There may not have been a reaction because copper is lower on the reactivity series than sodium. Metathesis: Precipitation (Nonredox) The reaction between and KCl is a double replacement reaction because the cations Cu2+ and K+ switched places and formed two new

  • Chemistry And Supramolecular Chemistry

    3041 Words  | 13 Pages

    1.1Supramolecular chemistry: Supramolecular chemistry is interdisciplinary branch of science encompassing chemical, physical and biological facets of chemical species of higher complexity glued, organized and structured by means of weak intermolecular (non-covalent) interactions [103]. Traditional or molecular chemistry deals with the covalent bond (atoms and bond between atoms), whereas supramolecular chemistry pivots around molecules and the bond between molecules. Intermolecular interactions

  • Chemistry: The Dangers And Benefits Of Chemistry In Chemistry

    2082 Words  | 9 Pages

    INTRODUCTION Chemistry deals with the principles that govern the changes matter may go through. It also the branch of Science that deals with the properties and the composition of matter. Chemistry is the science that touches our body starting from the smallest parts of atoms up to the substantial parts of our body. So basically, our knowledge in chemistry is beneficial to us, humans and other organisms, since it will help us to understand the dangers and benefits of this world. Stoichiometry

  • The Importance Of Chemistry In Chemistry

    1691 Words  | 7 Pages

    come together to create different reaction or output. Fertilizers use chemistry to determine the compounds needed to increase fertility of soil or crops. Chemistry helps check pH of soil and crops with the universal indicator and can help neutralise soil for the best growth of the plant. Waxes and chemical compounds like glycerine are widely used to package perishable fruits, not letting any moisture escape from the fruit. Chemistry is also applied in the heat and mass transfer in greenhouses, suspension

  • Chemistry

    924 Words  | 4 Pages

    Robert Boyle is considered both the founder of modern chemistry and the greatest English scientist to live during the first thirty years of the existence of the Royal Society. He was not only a chemist and a physicist as we know him to be, but also an avid theologian, a philanthropist, an essayist, and a beginner in medicine. Born in Lismore, Ireland to Richard Boyle, first earl of Cork, and Katherine Fenton, his second wife, Boyle was the youngest son in a family of fourteen. However he was

  • Chemistry

    990 Words  | 4 Pages

    Sunday-School lessons brought up more questions than I was capable of dealing with. Instead I concentrated on the two constants in my life, school and family. Education and love became the two pillars my world was balanced on. I especially enjoyed Chemistry. I loved that laws governed the universe. I loved that Science knew that nuclei were made up of protons and neutrons, that electrons were negative, and that opposite forces attract. These facts were undoubtedly true. It was such a relief to go to

  • Chemistry: Interpretation Of Chemistry

    956 Words  | 4 Pages

    Interpretation • Referred to table 9 Paracetamol: 1.Amide: contains nitrogen and carbonyl so it’s hydrophilic.2. Hydroxyl: hydrophilic because of the presence of Oxygen that can H-bond with water.3.benzene ring: lipophilic because of non-polar hydrocarbon ring. 4. Methyl is lipophilic because of the nonpolar hydrocarbon group. Aspirin: 1. Carboxylic acid: Oxygen that’s polar which can H-bond with water. 2. Ester: lipophilic because it is non polar although it has oxygen. 3. Benzene: lipophilic because

  • Modern Chemistry: The History And History Of Chemistry

    1273 Words  | 6 Pages

    Etymology The word chemistry comes from alchemy, which referred to an earlier set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism and medicine. It is often seen as linked to the quest to turn lead or another common starting material into gold,[6] though in ancient times the study encompassed many of the questions of modern chemistry being defined as the study of the composition of waters, movement, growth, embodying, disembodying, drawing

  • Chemistry, Chemistry And Chemical Changes In Physics, Biology, And Chemistry

    832 Words  | 4 Pages

    The differential equation an equation containing the derivatives of one or more dependent variable with respect to one or more independent variable . and the differential equation stand out dramatically in Physics , Biology, and chemistry … A chemical changes lead to the formation of substances that help grow our food , make our lives more productive , a chemical change or chemical reaction is a process in which one or more pure substances are converted into one or more different pure substances

  • The History of Chemistry

    789 Words  | 4 Pages

    Chemistry and technology are together and separate. Chemistry uses technology and technology uses chemistry. The history of chemistry and technology is long going back to the ancient times. Chemistry was used even by the oldest civilizations, like Egypt. It was really popular during the medieval times. Back then it was called Alchemy, which is turning metal into gold or even about the philosopher’s stone. As the years went by, Alchemy became a lost art and chemistry took it in place. Chemistry led