Organic Chemistry Laboratory Report. Experiment 1: Crystallization. Objectives: 1. To study the crystallization process. 2. To identify the best suitable solvent to use for the crystallization process. 3. Gain an experience in purifying an organic compound by the techniques of the crystallization. Introduction. Crystallization is a technique which chemists use to purify solid compounds. It is one of the fundamental procedures each chemist must master […]

Malnutrition has shown to be an important concern in women, children, and the elderly. Because of pregnancies and breastfeeding, women have additional nutrient requirements. Children can be at risk for malnutrition even before birth, as their nutrition levels are directly tied to the nutrition of their mothers.  Breastfeeding can reduce rates of malnutrition and mortality in children, and educational programs for mothers could have a […]

Chem 105 Practice Test 1 Note: There will not be this many questions on your test, I just wanted to give you as much practice as possible. Also, none of these exact questions will be on the test, just similar questions. Also, make sure you can do the homework, as I may have some questions similar to the homework questions. 1. Molecules can be described […]

CHEMISTRY IN OUR DAILY LIVES Chemistry In Everyday Life Chemistry in everyday life : Our entire universe is made up of matter which is constantly changing forms and evolving into other forms of energy. Chemistry is defined as the study or science of this ever changing matter. The other sciences which we study commonly like biology, physics and mathematics are all dependent on chemistry and […]

Blood is a necessary component of the majority of living organisms (all vertebrates and some invertebrates); it carries vital nutrients, oxygen and proteins to body tissues and carries away waste products. Blood, although most commonly red, can also be found in such colours as green, blue, clear, pink and violet. However, the common misconception surrounding the idea that human blood is blue before oxygenation is […]

Molly HubnerPeriod 1Extra Credit Paper Chemistry of Cancer Cancerous cells develop when conditions for cells are favorable, therefore following the divisions to continually occur, never stopping. When this happens, a tissue mass of cells called a tumor is formed and does not respond to normal controls regarding cell growth. Cancer cells have the following characteristics: profound changes in the plasma and membrane cytoplasm, abnormal growth […]

For some time in the modern world, and especially subsequent to the events of September 11th, there has been a wave of concern regarding chemistry and its potential destructive powers. There are many people who hold a fearful attitude towards the chemical industry and its products. This is because the threat of chemical and bio-chemical weapons is very real and is a negative aspect of […]

Table of Contents Laboratory Safety and Laboratory Guidelines Common and Special Laboratory Equipment Materials and Other Requirements Common Laboratory Operations and Techniques Experiment 1 ………………………………………………………………………….. 10 Properties of Matter Experiment 2 …………………………………………………………………………. 12 Chemical Changes Experiment 3 …………………………………………………………………………. 15 Classification of Matter Experiment 4 …………………………………………………………………………. 17 Chemical Nomenclature: The Language of Chemistry Experiment 5 …………………………………………………………………………. 22 Water of Hydration Experiment 6 …………………………………………………………………………. 25 Gases Experiment […]

 Questions A. Give two reasons why we fill the gas generator test tubes almost to the top with chemicals? The first reason is that we want to obtain pure gas and by minimizing the amount of air in the top this will maximize the gases purity. Also, some gases may react differently to air. Minimizing contact with air assures a better outcome. B. What happens […]

The Effect of Different Isotopes on Atomic Mass Introduction: An isotope is a variation of an atom that already exists. An isotope is different from an atom because of the number of neutrons in its nucleus. Finding the amount of neutrons in an atom can be calculated by subtracting the atomic number of a specific atom from its atomic mass. When looking at the periodic […]