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
Chemistry Review Challenge Directions: Your group will work together using any resources available in the room to answer the questions below. (Note: I would highly suggest using the blue matter books as one of those resources…but it’s up to you!…good luck with your decision) Rules: 1. You must get your answers checked for each section BEFORE moving on to the next section! 2. All questions from each section must be done to perfection before moving on to the next section! 3. All group members need to come get answers checked 4. All group members must be able to explain HOW you got your answer if asked…we are shooting for all to understand the material! 5. All group members must fill out their own sheets with the correct answers (this will become notes) Good Luck with your challenge! What are 4 main properties of matter? What is matter? What is the difference between: Mass Weight Volume Density What are the 4 states of matter? ****************************STOP – GO CHECK YOUR WORK ****************************** Calculate the density of each of the 3 blocks below and draw the precise location of the blocks if they were dropped in the cup of water to the right: 100 g L = .04 m W = .04 m H = .07 m Density = ____ g/cm3 L = 5 cm W = 5 cm H = 5 cm Density = ____ g/cm3 . 3 Kg r = .06 m L = .08 m Density = ____ g/cm3 155 g ****************************STOP – GO CHECK YOUR WORK ****************************** Temperature Celsius of Material in Beaker Analyze the following graph, and answer the questions associated with it. At time zero this substance is a SOLID. 160 G 140 120 D 100 C 80 F 60 E 40 A 20 B 0 0 5 10 15 20 25 30 35 40 45 50 Energy Added (Time on Hot Plate) Minutes 1) What state of matter is this material in at point C? __________________ 2) At what temperature does the phase change between a liquid and a gas occur for this substance? 3) At 5 minutes into this experiment, the substance is probably about: a. a) 50% Solid, 50% liquid b) all gas c) 50% gas, 50% liquid d) 100% gas 4) What is the term called for the process by which this substance moves from Point D toward Point F? 5) What is the term called for the process by which this substance moves from Point B toward Point A? ****************************STOP – GO CHECK YOUR WORK ****************************** Chemical and Physical Change Identify each of the following as a Physical or Chemical Change. Put a P next to Physical Changes Put a C next to Chemical Changes 1. A piece of wood burns to form ash. _________ 2. Water evaporates into steam. _________ 3. A piece of cork is cut in half. _________ 4. A bicycle chain rusts. _________ 5. Food is digested in the stomach. _________ 6. Water is boiled in a pan. _________ 7. Hydrochloric Acid reacts with zinc. _________ 8. A piece of an apple rots on the ground. _______ 9. A tire is inflated with air. _________ 10. Sugar dissolves in water. _________ 11. A plant turns sunlight, CO2, and water into sugar and oxygen. _________ 12. Eggs turn into an omelette. _________ 13. Milk sours. _________ 14. A popsicle melts. _________ 15. A rockstar gets a tattoo. _________ What are 2 possible pieces of evidence that would support if a chemical change has occurred? ****************************STOP – GO CHECK YOUR WORK ****************************** Atomic Structure 1.The 3 particles that make up an atom are: a.______________________ b.______________________ c.______________________ Their respective charges are: a.______________________ b.______________________ c.______________________ 2.The atomic number tells you the number of ______________________in one atom of an element. It also tells you the number of _____________________in a neutral atom of that element. The atomic number gives the “identity “ of an element as well as its location on the Periodic Table. No two different elements will have the __________ atomic number. 3.The ______________________of an element is the average mass of an element ’s naturally occurring atom, or isotopes, taking into account the ______________________of each isotope. 4.The ____________________of an element is the total number of protons and neutrons in the _______________ of the atom. 5.The mass number is used to calculate the number of ______________________in one atom of an element. In order to calculate the number of neutrons you must subtract the ___________________from the ______________________. ****************************STOP – GO CHECK YOUR WORK ****************************** Use the periodic symbol provided to draw a boron atom (be sure to include all protons, electrons, and neutrons in their appropriate spots). 5 B 10.8 ****************************STOP – GO CHECK YOUR WORK ****************************** 7.Give the symbol and number of protons in one atom of: Lithium __________________ Bromine __________________ Iron _____________________ Copper __________________ Oxygen __________________ Mercury __________________ Krypton __________________ Helium ____________________ 8.Give the symbol and number of electrons in a neutral atom of: Uranium ________________ Chlorine __________________ Boron __________________ Iodine __________________ Antimony ________________ Xenon __________________ 9.Give the symbol and number of neutrons in one atom of: Barium __________________ Bismuth __________________ Carbon __________________ Hydrogen __________________ Fluorine __________________ Magnesium __________________ Europium _________________ Mercury __________________ ****************************STOP – GO CHECK YOUR WORK ****************************** 10. Name the element which has the following numbers of particles: a. 26 electrons,29 neutrons,26 protons _____________________ b. 53 protons,74 neutrons _____________________ c. 2 electrons (neutral atoms)_____________________ d. 20 protons _____________________ e. 86 electrons,125 neutrons,82 protons (charged atom) ____________________ 11 .If you knew only the following information could you properly identify the element? a. number of protons ___________ b. number of neutrons__________ c. number of electrons in a neutral atom___________ d. number of electrons__________ ****************************STOP – GO CHECK YOUR WORK ****************************** Classify each of the following as either an element (E) or compound (C) or mixture (M): Sand, SiO2 _____ Oxygen Gas _____ Mud _____ Tomato Soup ______ Diamond, C _____ Blood _____ Copper Wire _____ Kool Aid ______ Carbon Dioxide Gas _____ Air ______ ****************************STOP – GO CHECK YOUR WORK ****************************** Directions: Put the number of the definition from the list below into the square with the appropriate term. Check your answers by adding the numbers to see if all the sums of all rows, both across and down add up to the same number, the Magic #. Democritus _____ Dalton _____ Thomson _____ Chadwick ______ Total _____ Rutherford _____ Proton _____ Atom _____ Bohr _____ _____ Wave Model _____ Neutron _____ Nucleus _____ Alpha particle _____ _____ Electron _____ Model ______ Energy levels _____ Electron cloud _____ _____ Total _____ 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. _____ _____ ______ Magic Number ______ Represented by a symbol; all are found on the Periodic Table Made a mental model of the atom; Greek philosopher Used by Rutherford in his experiment; made of two protons and two neutrons The paths in which electrons circle the nucleus according to the Bohr model The positive particle in the nucleus of an atom The tiny positive core of an atom; contains protons and neutrons Formed the atomic theory model of the atom; English schoolteacher Discovered the nucleus using his gold foil experiment Current explanation of where electrons might be found in the atom Used by scientists to explain something we can not see or understand The smallest particle of an element that has the properties of that element Discovered the neutron Current model of the atom; proposed by Schrodinger Mass of protons and neutrons Developed the model of the atom in which electrons orbit the nucleus in energy levels The negative particle that circles the nucleus The neutral particle in the nucleus of an atom Proposed the “plum-pudding” model of the atom; discovered the electron