"Chemistry worksheet" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 3 of 50 - About 500 Essays
  • Good Essays

    chemistry

    • 1050 Words
    • 5 Pages

    Candidate name…………………………………………………………………….. MINISTRY OF EDUCATION MASALA SECONDARY SCHOOL BOARD MOCK EXAMINATION 2014 SCIENCE 5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name‚ centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks)

    Premium Chemical element Atomic number Atom

    • 1050 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 356 Words
    • 2 Pages

    Separation of a Mixture of Solids PURPOSE: The purpose of this lab is to familiarize ourselves with the techniques associated with separating a mixture of different solids. We will learn how the unique properties of substances can aid in this process and help us distinguish each pure substance from one another. DATA OBSERVATIONS CALCULATIONS CONCLUSION/DISCUSSION QUESTIONS A. How did your proposed Procedures or flow charts at the beginning of this experiment compare to the actual Procedures

    Free Mixture Separation process Chemistry

    • 356 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 470 Words
    • 2 Pages

    Baking Project There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis: * Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked‚ the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked‚ it helps form a

    Premium Acid Chemical reaction Carbon dioxide

    • 470 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Chemistry

    • 765 Words
    • 4 Pages

    Isotopes and average atomic mass Isotope: element variations with different atomic mass but same atomic number Isotopic Abundance: the relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages‚ you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B Calculate:

    Premium Chemical element Neutron Atomic number

    • 765 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    chemistry

    • 670 Words
    • 3 Pages

    Abstract By adding HCl to 2-methyl-2-butanol‚ through the Sn1 mechanism‚ 2-chloro-2-methylbutane is formed. Water‚ sodium bicarbonate and NaCl(aq) were then added to the 2-chloro-2-methylbutane to remove any of the excess water from the reaction. To confirm‚ a successful reaction‚ AgNO3 was added to the 2-chloro-2-methylbutane. A white precipitate formation confirmed a successful Sn1 reaction. Introduction Nucleophilic substitution reactions such as Sn1 and Sn2 allow us to convert one functional

    Premium Alcohol Functional group Chemical reaction

    • 670 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 1812 Words
    • 8 Pages

    Absorbance of Light vs. Concentration of Colored Solution Introduction: Performing this lab showed the importance of light in virtual drug screening because light can be used in a variety of ways to obtain different kinds of information in research. Light can be used to determine the concentration of DNA or protein in solution‚ tag different objects such as cells‚ protein structures‚ or bacteria in order to determine whether there is a large amount of a certain substance‚ and to determine the size

    Premium Concentration Chemistry Light

    • 1812 Words
    • 8 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 649 Words
    • 3 Pages

    Module 4: 10. Strong Bases: NaOH‚ KOH‚ Na2CO3‚ NaHCO3‚ Na3PO4‚ NaHPO4‚ Strong Acids: Fe(NO3)3‚ HCL‚ HNO3‚ Al(NO3)3‚ NiCl2‚ H2SO4 11. Acidic Neutral Basic NaCl KNO3 NaOH HC2H3O2 Na2CO3 NaC2H3O2 NaHCO3 Fe(NO3)3 NaNO3 Na3PO4 HCl MgSO4 KOH HNO3 Na2SO4 NaHPO4 CuSO4 NaNO2 CoCl2 Al(NO3)3 NiCl2 H2SO4 KCl NH4Cl 12. CuSO4 CuCO3.Cu(OH)2(s) + 2 H2SO4(aq) ----> 2 CuSO4(aq) + CO2(g) + 3 H2O(l) Na3PO4 Na3PO4 (aq) + 3H2O (l) --> H3PO4 (aq) + 3NaOH

    Free PH Acid dissociation constant Acid

    • 649 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 762 Words
    • 4 Pages

    Experiment 9 : 
The effect of substrate concentration on enzyme activity Objective To find out the relationship between the substrate concentration and the rate of reaction by determining the number of bubbles produce Hydrogen peroxide (H2O2) is a by-product of biochemical metabolism. An accumulation of hydrogen peroxide can be deadly‚ so it has to be decomposed. One of the decomposing factors is an enzyme called Catalase. Catalase breaks hydrogen peroxide into water and oxygen. The chemical

    Premium Hydrogen peroxide Chemical reaction Oxygen

    • 762 Words
    • 4 Pages
    Good Essays
  • Better Essays

    Chemistry

    • 2008 Words
    • 9 Pages

    Studying Chemistry at UCL UNDERSTANDING THE PAST  CHALLENGING THE PRESENT  SHAPING THE FUTURE Why UCL‚ why UCL Chemistry‚ why London? Course Structure What you’ll do; timetable; assessment From being taught to deep learning Opportunities Why UCL? UNDERSTANDING THE PAST  CHALLENGING THE PRESENT  SHAPING THE FUTURE History Oldest university (1826) outside Oxbridge in England First inclusive UK university Founded on principle of educating anyone who would benefit Non-CofE‚ women

    Premium Chemistry Organic chemistry

    • 2008 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    chemistry

    • 393 Words
    • 2 Pages

    Source: Chemistry by C. Mortimer PP 1-5 Chemistry by R.S. de Borja PP 1-5 Definition of Chemistry Chemistry is concerned with the composition and the structure of substances and with the forces that hold this structure together. And the changes that undergoes with the energy involved in them. History Chemistry which emerged‚ took hundreds of years to develop the history of its development can be divided ranging into five

    Premium Chemistry Middle Ages

    • 393 Words
    • 2 Pages
    Satisfactory Essays
Page 1 2 3 4 5 6 7 8 9 50