Sabrina Gournaris Period 3 March 27‚ 2012 Marshmallow: The Snack That Acts Like A Gas Objective: Record and observe marshmallow and compare it to Boyle’s law. Materials: -2 mini marshmallows -1 syringe -A pen Experimental Procedure: 1. Take out marshmallow. 2. Draw face on marshmallow. 3. Open stopcock. 4. Pull plunger out. 5. Put marhmallow in syringe. 6. Put plunger back into syringe
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1 Heat and Gases Chapter 1 Temperature and Thermometers New Senior Secondary Physics at Work Oxford University Press 2009 1 1 Temperature and Thermometers Practice 1.1 (p. 10) 1 B 2 D 3 A 4 Temperature is a measure of the degree of hotness of an object. 5 (a) On the Celsius temperature scale‚ the lower fixed point is the ice point (0 C) and the upper fixed point is the steam point (100 C). (b) We can reproduce the lower and upper fixed points by using pure melting ice and pure
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Exercise 1. What safety equipment is available to you while you do your experiments? How far are they from you while you are conducting your experiments? This includes fire extinguishers‚ phones‚ showers‚ etc. The safety equipment that I have access to while performing my experiments are as follows; shower‚ fire alarms and a telephone. They are all within ten feet from where the experiment will take place. 2. What is an MSDS? MSDS is a document that is required by Osha’s “Hazard
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is to acquire the use of common and simple laboratory equipment. Brief Procedure: A Bunsen Burner: Examine burner‚ locate gas and air flow‚ determine the operation of each valve. Connect the Bunsen burner to a gas tap using a piece of rubber tubing.Close the needle valve and the air vent. Open the gas valve. Open the needle valve 1-2 full turns‚ listening for the sound of gas. Using the striker‚ light the burner. The flame of the Bunsen burner should be yellow and irregular in shape. Open the air-hole
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ways to find the molar mass of a substance. One way‚ if the substance is a gas‚ is to use the Ideal Gas Equation to find molar mass. The standard equation reads PV=nRT where “n” is the number of moles present‚ “P” is the pressure (which is obtained by reading the barometric pressure of the room with the class barometer)‚ “V” is the volume of the gas‚ “R” is the universal constant‚ and “T” is the temperature of the gas. The experiment’s objective is to calculate the experimental value of molar mass
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tension can be broken by adding soap to water. Gases An airlike fluid substance which expands freely to fill any space available‚ irrespective of its quantity. Examples: Water vapor‚ Hydrogen‚ Oxygen Plasma seen in ionized gases distinct from a gas because it possesses free electrical charges (not bound to atoms or ions) cause plasma to be electrically conductive. Examples: Stars‚ Lightning‚ fluorescent lights Melting(Endothermic) Become liquefied by heat. Melting point-the temperature
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Matter In Our Sourroundings Important Questions Not for coping to note Q. 1. What is a matter? Answer : Anything that occupies space and has mass is called a matter. For example:- Chalk‚ Milk‚ Sugar etc. Q. 2. Sodium chloride and sugar have same appearance. Are they same or different? Answer : They have different physical and chemical properties. So‚ they are different. Q. 3. All substances around us are alike. How? Answer : All substances can occupy space and have weight.
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____________________________________________________________________________ ____________________________________________________________________________ Gizmo Warm-up On the Boyle’s Law and Charles’ Law Gizmo™‚ check that the BOYLE’S LAW tab is selected. The Gizmo shows a container of gas; the little purple spheres represent molecules. 1. Observe the particles. Are they all moving at the same speed? _____No_______________________________ 2. How do the particles interact with the walls and lid of the container? _They run into them
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____________________________________________________________________________ ____________________________________________________________________________ Gizmo Warm-up On the Boyle’s Law and Charles’ Law Gizmo™‚ check that the BOYLE’S LAW tab is selected. The Gizmo shows a container of gas; the little purple spheres represent molecules. 1. Observe the particles. Are they all moving at the same speed? _____No_______________________________ 2. How do the particles interact with the walls and lid of the container? _They run into them
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Kinetic Molecular Theory explains many gas law specifically Boyle’s gas law‚ Charles’ gas law‚ and Avogadro’s gas law. To understand what will be talked about is to first know what the Kinetic Molecular Theory is. In our textbook is says it is “A simple model for gases that predicts the behavior of most gases under many conditions.” First off‚ we will take a look at Boyle’s Law. As stated in our lab manual “at constant temperature the pressure which a given mass of a gas exerts is inversely relate to its
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