Physical and Chemical Change Worksheet. ... Is a chemical reaction occurring? Why or why not? Title: Physical and Chemical Change Worksheet Author: Un...
Physical and Chemical Change Worksheet Multiple Choice For # 1 and 2, write a P for physical change, and a C for chemical change. _____ 1. A ( Physical or Chemical
Part B Read each scenario. Decide whether a physical or chemical change has occurred and give evidence for your decision. The first one has been done for you to use
Part B Read each scenario. Decide whether a physical or chemical change has occurred and give evidence for your decision. The first one has been done for you to use
Physical and Chemical Properties Worksheet. Physical or Chemical? Circle the best choice for each of the statements below. 1. (Physical or Chemical) properties describe matter. 2. (Physical or Chemical) properties of a substance can be easily observe
Part Two: Physical or Chemical Change? Indicate with a 'P' or a 'C' which type of change is taking place. 1. ______ glass breaking. 10. ______ mixing salt and water. 2. ______ hammering wood together. 11. ______ mixing oil and water. 3. ______ a rust
KEY: WORKSHEET ON CHEMICAL VS PHYSICAL PROPERTIES AND CHANGES Keep this in your binder as a study guide! Background: Keeping the difference between physical and
1 Metals And Their Properties- Physical and Chemical All the things around us are made of 100 or so elements. These elements were classified by Lavoisier in to metals
Created Date: 11/13/2014 9:27:30 AM
Signs of a Chemical Change You may not be able to see that any new substances have formed dur-ing a change.Below are some signs that a chemical change may have
Answers Worksheet on Chemical vs Physical Changes #1 ... Worksheet #2 Physical/Chemical Properties/Changes I. Physical Chemical Solids Liquids
Chemical Equation Worksheet Write, complete, and balance the following equations using phase notation. 1) sulfur dioxide + water Æ 2) ammonium nitrite Æ
Worksheet #2: Physical/Chemical ... Fill in the Blanks. ______ properties can be observed without chemically changing matter. ______ ... melting point. _____ ductility. _____ odor. _____ texture. _____ flammability. _____. III. Label these changes as
PHYSICAL AND CHEMICAL PROPERTIES OF WATER A Bibliography: 1957-1974 Donald T. Hawkins Bell Laboratories Murray Hill, New Jersey With a Foreword by
Physical, chemical and biological characteristics ... Physical properties: ... chemical wastewater treatment. Water and wastewater can be classified as
physical change a change of matter from one as density, color, or hardness form to another without a change in chemical properties. 1. Describe In words, explain how to calculate the density of a substance. Use this table to answer questions 2 and 3.
PHYSICAL PROPERTIES Selected physical properties for canola oil are shown in Table 1. Table 1. Physical Properties of Canola Oil Parameter Value
3. CHEMICAL AND PHYSICAL INFORMATION. ... water, and soil. The more ... Information regarding the physical and chemical properties of CDDs is presented in Table 3-2
Download ikan cakalang (Katsuwonus pelamis) asap yang diproduksi di Kota Kendari. ... metode pengasapan dan bahan pengasap menyebabkan perbedaan sifat ...
Physical, Chemical, and Biological Characteristics of the Charlotte Harbor Basin and Estuarine System in Southwestern Florida–A Summary of the 1982-89 U.S
Worksheet: Writing and Balancing Chemical Reactions 1. Balance the following equations and indicate the type of reaction as formation, decomposition, single
Water is a familiar substance. We know what it ... Positive and negative electrical charges attract one another. so water molecules tend to at- tract other ... hydrogen, lithium) have a higher specific heat than water. Because water absorbs so much h
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Physical and Chemical Change Worksheet True or False. If false, correct the underlined portion of the statement so that it is true. 1. A physical change is a change of matter from one form to another without a change in chemical properties. 2. A physical change is a change that occurs when a substance changes composition by forming one or more new substances. 3. Color change is evidence that a chemical change may have occurred. 4. Fizzing or foaming is evidence that a chemical change may have occurred. 5. Production of light is evidence that a physical change may have occurred. 6. Production of heat or light is evidence that a chemical change may have occurred. 7. A change in odor is evidence that a physical change may have occurred. 8. Chemical changes can be reversed by physical changes. Identify each of the following as either a Physical change (P) or a chemical change (C). 1. You cut your hair. _______ 2. Making a peanut, pretzel and cereal mixture. _______ 3. Baking soda reacts with vinegar and forms a gas. _______ 4. A piece of metal is bent in half. _______ 5. An aspirin is crushed into fine powder. _______ 6. Copper turns green when exposed to the environment. _______ 7. Two clear liquids are mixed and a yellow color forms. _______ 8. Baking cookies. _______ 9. Diamonds are used to scratch glass. _______ 10. A tree burns to form ashes. _______ 11. A piece of paper is crumpled up. _______ 12. Water freezes to form ice. _______ 13. Food spoiling. _______ 14. A candle burning. _______ 15. A candle melting. _______
% Transmittance
Analyzing Graphs The graph at the right plots the amount of light transmitted (% Transmittance) through a reaction flask as a function of time. Initially, the flask contains only 100 air. After a short period of time, a light blue solution is added to the reaction flask. After another period of time, a clear solution is added to the flask, and the entire solution turns dark blue. 1. At what time is the light blue solution added to the reaction flask?
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2. At what time does the dark blue solution begin to form?
3. The %Transmittance levels off at about 8 minutes. What is happening in the reaction flask?
4. After 15 minutes, another solution is added to the reaction flask and the % Transmittance returns to 100%. Did another reaction take place? Please explain your answer.
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Temperature (°C)
5. Two clear, colorless liquids are allowed to come to room temperature (22 °C). The timer is started and then the two solutions are mixed together to form another clear, colorless liquid. Looking at the graph to the right, at what time were the two solutions mixed together?
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A Thought Experiment A sealed flask of a clear, colorless liquid is left sitting on an interior sunny windowsill. After about an hour, there are droplets of a clear liquid on the glass above the solution, which has turned yellow. After two hours, the solution is dark brown with clear, colorless droplets of liquid on the glass. After sitting on the windowsill for a week, the walls of the flask have a silvery lining and both the solution and the droplets are clear and colorless. 6. Which of the following is not an indication that a chemical reaction has occurred? (a) formation of liquid droplets above the solution (b) the solution color changing from clear to yellow (c) the solution color changing from brown to clear (d) formation of a silvery metallic foil on the walls of the flask 7. The formation of the silvery lining is an example of which of the following indicators of chemical change? (a) evolution of a gas (b) distinct color change (c) precipitate formation (d) temperature change 8. (Short answer) There is only one reaction taking place in the flask. What is one possible reason for all of the color changes?
9. (Short answer) An observant chemistry student is enjoying a glass of iced tea during lunch (not in the lab!), and she notices that the color of her drink changes as the ice in the glass melts. Is a chemical reaction occurring? Why or why not?
