Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Physical Properties Unit Review Name________________________Per___ 1. Complete the following table for the physical properties of a quarter. PHYSICAL PROPERTY QUARTER PHYSICAL PROPERTY QUARTER Color Silver State Luster Yes Magnetic Malleable no Conductive 2. What is the density of an object with a mass of 5 g and a volume of 2 cm3? 2.5 g/cm3 3. Which of the following will float in a liquid with a density of 1.5 g/cm3? A. 1.6 g/cm3 B. 3.6 g/cm3 C. 1.2 g/cm3 4. Complete the following chart for the states of matter. STATE OF SHAPE VOLUME MATTER (definite or not) (definite or not) Solid Definite Definite Liquid Not definite Definite Gas Not definite Not definite Solid No yes EXAMPLES DRAWING OF PARTICLES Ice Rock Water Juice Steam air 6. What causes a substance to change from one state to another?_add or remove energy 7. Write physical or chemical change for each of the following: Physical Water evaporating Chemical burning toast chemical nail rusting Chemical Fireworks exploding Physical ice melting Physical Ripping paper 8. Write element, compound or mixture below each of the following diagrams. Compound Compound Unit Review 1. Complete the following table: COMPOUND mixture element LIST OF ELEMENTS IN THE # OF EACH COMPOUND ELEMENT H2SO4 Hydrogen 2 Sulfur 1 oxygen 4 NaCl Sodium 1 Chlorine 1 Fe2(SO4)3 Iron 2 Sulfur 3 Oxygen 12 2. Chemical bonds occur when electrons are transferred or shared . 3. The combining ability of an atom is called the oxidation number. 4. Describe each bond and draw a diagram to show what is happening with the valence electrons. IONIC transfer electrons COVALENT share electrons Element Unit Review 1. Write the chemical symbol for each of the following: H hydrogen K potassium C carbon O oxygen Mg magnesium Na sodium 2. Use the Periodic Table to complete the following chart: Element Atomic Number Atomic Mass Protons 8 16 8 Oxygen 11 23 11 Sodium 9 19 9 Fluorine Li lithium Cl chlorine Electrons 8 11 9 Neutrons 8 12 10 Metal or Nonmetal Nonmetal Metal nonmetal 3. Complete the following table: ATOMIC PARTICLE Proton Neutron Electron LOCATION CHARGE MASS (in nucleus or outside nucleus) (positive, negative or neutral) (1 amu or very little mass) In nucleus In nucleus Outside nucleus Positive Neutral negative 1 amu 1 amu Very little mass 4. Circle the correct atomic particle for each of the following: Defines an atom Protons Neutrons Electrons Isotopes: same type of atom with different number of Protons Neutrons Determines how atoms combine Protons Neutrons Electrons Ions: same type of atom with different number of Protons Neutrons Electrons Electrons 5. According to current atomic theory, what is the best description for the location of the electrons? A. Orbiting in perfect rings around the nucleus B. A cloud around the nucleus showing where an electron is likely to be 6. Complete the following table: Element Group or Column # Period or Row # # of Energy Levels # of Valence Electrons 2 3 3 2 Magnesium 14 2 2 4 Carbon 17 3 3 7 Chlorine 7. Which group has the most stable arrangement of electrons in the outer energy level?_ Noble gases 8. Which group name means “salt makers”? halogens Reactions Unit Review 1. Complete the table below for each reaction: REACTION REACTANTS PRODUCTS TYPE OF RXN BALANCED? Mg + O2 MgO Mg, O2 MgO Synthesis no KBr + Cl2 KCl + Br2 KBr, Cl2 KCl, Br2 Single no HCl + NaOH H2O + NaCl HCl, NaOH H2O, NaCl Double yes H2O2 H2O + O2 H2O2 H2O, O2 Decomposition no 2. What is the relationship between the Law of Conservation of Mass and chemical reactions? In a chemical reaction, matter is rearranged but not created or destroyed, so the grams of reactants and products will be the same 3. If a reaction has 17 g of reactants, how many grams of combined products will the reaction have?_17 4. What is the difference between exothermic reactions and endothermic reactions? Exothermic—gives off energy Endothermic—absorbs energy What factors make a reaction go faster? Stirring, increasing temperature, increasing surface area, increasing concentration of reactants 5.