CP Chemistry Midterm Study Guide What is the proper way to measure a volume in a graduated cylinder?

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1 Name Date CP Chemistry Midterm Study Guide 2017 List 5 laboratory safety rules. What is the proper way to measure a volume in a graduated cylinder? Name 5 pieces of equipment used in the laboratory, and sketch a picture of each. Define Chemistry Since chemistry studies matter what is the definition of matter. What is an example of something that is not matter? What is this classified as if not matter? What is the difference between intensive and extensive physical properties? What are the scientific units of length, mass, and volume? What are all the metric units that we have talked about thus far? Draw a chart that will help you remember them. How would you convert between two units. Try the following (show all work) 25 cm = km 50g = mg 900 hm = km 1

2 For the following calculations: the volume of a cylinder is πr 2 h the volume of a cube is L x W x H. The mass of a stone was found to be 90 g. The initial water level in a graduated cylinder was found to be 5.00 ml, and when the stone was placed inside it rose to 20.0 ml. What is the density of the stone? A cylinder has diameter of 1.00 cm and a height of 90 cm. What is the density of the cylinder if it has a mass of 650 g? Explain the significance of the symbols (s), (l), (g), (aq). How many elements are in each of the following compounds: a) NaCl b)agno 3 c)pb(so 4 ) 2 What is the Law of Conservation of Matter? What are physical and chemical changes? Give some examples of each. What are the four things that indicate a chemical change? What are the properties of metal, nonmetals and metalloids? 2

3 What are the rows on the periodic table called? What are the columns called? How are elements sorted into rows and columns? What are the names of the groups of the periodic table from left to right? What evidence supports each of the following models? a) plum pudding model b) nuclear model c) solar system model What are the three parts of the atom? Where in the atom are they found? What are the charges and masses of each? Complete the table below: Isotopic Notation Atomic Mass Protons Neutrons Electrons!"!F !"#!"I Define the term isotope. 3

4 The chlorine isotopes are listed below, what is the average atomic mass of chlorine? Isotope Atomic Mass (amu) % Abundance Chlorine Chlorine What is the difference between nuclear fission and nuclear fusion? Explain what happens to mass number and atomic number in beta decay and alpha decay. Write an equation for the beta decay of sodium-24. Write an equation for the alpha decay of uranium-233. What is the half-life of an isotope? What is happening to the electrons in an atom during a flame test? What part of a compound is responsible for the color observed in a flame test, the metal or the nonmetal? Differentiate between core and valence electrons. Fill in the following table: Group # # Valence Electrons Ion Charge 4

5 How do ionic bonds form? Explain the Rule of Zero Charge. Why do ionic compounds with transition metals require the use of roman numerals in their names? Name the following ionic compounds: a) NaCl b) CaSO 4 c) FeBr 3 d) (NH 4 ) 2 CrO 4 Write chemical formulas for the following ionic compounds: a) Lithium hydroxide b) Sodium phosphate c) Copper (II) nitrate d) Magnesium nitride For the elements below, provide the electron configuration notation and noble gas notation N Fe What are the 4 types of chemical bonds? Explain what is happening to the valence electrons in each bond type. Explain how conductivity and solubility can be used to classify compounds. 5

6 Predict if the following substances will conduct electricity: a) NaBr (s) b) NaBr (aq) c) Mg (s) d) C 6 H 12 O 6 (aq) Describe difference in the hardness observed in the 4 different types of chemical bonds. Define the term isomer. Explain the Octet rule. How many bonds do hydrogen, carbon, oxygen, and nitrogen form? How many lone pairs do each have? Draw Lewis structures for the following molecules. Then indicate the shape and polarity. Cl 2 HF N 2 H 2 S NH 3 CHCl 3 6

AE Chemistry Midterm Study Guide

Name Date Define Chemistry AE Chemistry Midterm Study Guide Since chemistry studies matter what is the definition of matter. What is the Law of Conservation of Matter? What is energy, what are the two