201pracexam1 - Part 1. Select the appropriate word or words...

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Part 1. Select the appropriate word or words for each of the following definitions. (1 point each) 1. A philosophy that suggested that living things did not obey the same laws as non- living matter, and therefore could not be made by chemical or physical means.__ ___________ 2. The opposite of the hypothesis, that states that there will be no difference between an experimental and a control group___ ______________ 3. The number of __ __________distinguishes the atoms of different elements from each other. 4. Chlorine (Cl) needs to gain one electron to fill its outer shell. Potassium (K) needs to lose one electron to acquire a completely filled outer shell. Thus we would expect to find an _ _________bond in potassium chloride. 5. All organic molecules contain the element _ _______________ 6. _______are the building blocks of carbohydrate polymers. 7. The specific name for the types of bonds seen between glucose molecules in cellulose is _______________ 8. Phospholipids contain both hydrophilic and hydrophobic elements and are therefore described as being __ __. 9. In a water molecule, oxygen’s high_ __causes that atom to hold electrons more tightly than do the hydrogen atoms. 10. The number of unpaired electrons in an atom’s outermost shell that corresponds to the number of bonds that the atom can form is known as that atom’s _ ____________________.
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Part 2. Multiple choice. Circle the single best answer. (1 point each). 1. The nuclei of most atoms consist of: a. neutrons and protons b. protons and electrons c. electrons and neutrons d. protons only e. neutrons only 2. The atomic weight of most elements is determined by the number of: a. protons, neutrons and electrons b. protons and electrons c. neutrons and electrons d. protons and neutrons e. protons only 3. Chorine has an atomic weight of 35 and contains 18 neutrons. How many electrons does it contain? a. 9 b. 17 c. 18 d. 35 e. 53 4. The area around the nucleus of an atom is almost entirely composed of: a. electrons b. protons c. neutrons d. empty space e. energy 5. Fluorine has an atomic number of 9. It has a full inner electron shell. Its second shell contains 7 electrons. Fluorine will most likely;
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201pracexam1 - Part 1. Select the appropriate word or words...

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