Chemistry Review sheet: Unit 1- Lesson 1, 2 *Key notes to keep in mind* u Metals have a high low ionization energy u Non-metals have a high electron affinity · Atom: The basic unity of an element which still retains the elements properties · Atomic number: the unique number of protons in the nucleus of a particular element · Isotope: Atoms of the same element […]

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. Molecules can be described as […]

 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 […]

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 […]

Which test tube represents the control? The one with water. C. Why? When protein molecules are present, Beirut Reagent reacts with the protein to form a purple color. Tube number one is the control tube because it is distilled water and has no protein; the tube has no color. C. Which test tube contained the most test substance? Amylase D. Other than the control, which […]