Chemistry 1 Worksheet

Chemistry 1 Worksheet - How many valence electrons does the...

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Chemistry 1 Worksheet 1) Define each of the following: Element Atom Neutron Proton Electron Atomic number Mass number 2) What is an isotope? 3) An atom or element with a neutral charge has the same number of ________ and __________. 4) An element has an atomic number of 13. How many protons does it have? How many electrons does it have? 5) This same element has a mass number of 27. How many neutrons does it have? 6) An atom has the atomic number of 16. How many electrons are in the first shell? The second shell? The third shell?
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Unformatted text preview: How many valence electrons does the atom in #6 have? 7) Define a covalent bond. Give an example of a single and double bond. Draw its structural formula. 8) Define an ionic bond. What is a cation? What is an anion? 9) Define a hydrogen bond. What does it help shape? 10) Define an acid. Use the pH scale in the definition. 11) Define a base. Use the pH scale in the definition. 12) What is a salt? Why are they important? 13) What is a buffer? What does a buffer minimize?...
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