LAB EXAM 1 REVIEW Answer Key.docx

LAB EXAM 1 REVIEW Answer Key.docx - LAB#1 Test Review...

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LAB #1 Test Review Answer Key 1. What is density? Density is the weight of an object at a given size. It is mass of an object divided by its volume. Essentially it is the thickness/substance of the object. 2. What is volume? The amount of space that a substance occupies. 3. Define percent error? A measure of the accuracy of how close the data is to the accepted value. 4. How can volume help you find density? Density is mass divided by volume. Volume tells you the amount of space a substance occupies and if you know the mass (weight) of this same substance you will always be able to know its density. 5. List the first 10 elements on the periodic table by name and symbol. Hydrogen, H Helium, He Lithium, Li Beryllium, Be Boron, B Carbon, C Nitrogen, N Oxygen, O Fluorine, F Neon, Ne 6. Which of these are diatomic? Hydrogen, Nitrogen, Oxygen, and Fluorine Define the following 7. Ionic compound: a chemical compound comprising ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions. 8. Binary Compound: a chemical compound that contains exactly two different elements.
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9. Molecular compound: a compound where the atoms share electrons through covalent bonds 10. Polyatomic ion: ion composed of more than one element covalently bonded to another element(s) and often containing oxygen.
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  • Spring '16
  • RexJ.Gamble
  • Chemistry, Atom, Define specific heat, nonmetallic element, Define percent error, 31. 2C6H6 + 15O2 à 6H2O

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