Assess your understanding of heating and cooling curves with this quiz and worksheet. Nect gr 10 heating and cooling curve of water class act. The heating curve of water now lets look at a schematic diagram of continuous heating of water from a temperature well below the freezing point to one well above the vaporization point. If you dont see any interesting for you, use our search form on bottom v. Heating curve of water the phase transitions of water. In this heating and cooling curve worksheet, students use a given graph of a substance being heated from a solid to a liquid and then a gas over time. You are to record your temperature every minute in degrees celsius. Heating and cooling curves the basics what happens to the temperature of a block of ice when you put a bunsen burner underneath it. This is an amazing curve and one worth staring at for a while. This heatingcooling curve worksheet is suitable for 9th 12th grade. If this curve is read from right to left, it is a cooling curve. Please help me with project physical science grade pic. Electrical heating allowed us to determine the heat entering the system to a high accuracy.
A learner guide for grade 10 physical sciences with learner activities. Dover road and pretoria avenue, randburg, south africa. Embedded videos, simulations and presentations from external sources are not necessarily covered by this license. Steam above 100c could be steadily cooled down to 100c, at which point it would condense to liquid water.
States of matter and the kinetic molecular theory siyavula. Copy into your lab report using a ruler to make it neat and tidy. To do well on this assessment, youll need to know about the various phases on a. System s cools until it is in thermal equilibrium with e. Heating curve of water 30 favorites activity in melting point, freezing point, phase changes, molecular motion, heat, specific heat, temperature, intermolecular forces, heating curve, boiling point, heat of vaporization, heat of fusion, aact simulations. This heating curve lab lesson plan is suitable for 10th grade. Explain how heat is produced and can move from one state of matter to another. We had to heat ice in a hot water bath over a bunsen burner and record the time every 30 seconds until it boiled and then in a freezer the same way it was just a hypothetical experiment. Heating and cooling curves of stearic acid using thermometer lab purpose. Heating and cooling of water cooling heating exponential decay e s newtons law of cooling t s t e. The cooling rate is following the exponential decay.
The theoretical behaviour can be altered by changing the conditions under which the experiment is modelled. A cooling curve is a graph of the variation of the temperature of a sample with time as it is allowed to cool. Heating curve lab lesson plan for 10th grade lesson planet. This is assisted by an experiment in real classroom conditions. Observe changes in matter due to heating and cooling of common materials. The graph of temperature against time is called a heating curve. Use the data below to plot a heating curve for water heating curve for water time temperature oc time temperature oc 0 0.
A heating curve of a substance gives the changes in temperature as wemove from a solid to a liquid to a gas. To investigate the heating and cooling curve of water. The increase in temperature causes the water to change. All siyavula textbook content made available on this site is released under the terms of a creative commons attribution license. To study the effects of heating and cooling a pure substance through a change of phase. A cooling curve gives the changes in temperature as we move from gasto liquid to solid. In the above experiment, you investigated the heating and cooling curves of water. The experiment described above can be summarized in a graph called a heating. You might think that the temperature goes up smoothly, but thats not what happens. A graph of the cooling curve of a pure substance is plotted. They input values into a calculator as they record water temperature every thirty seconds as it is heated on a hot plate. Test results are represented by the cooling curve, i.
Construct a heating and cooling curve of a pure substance using experimental data. Figure \\pageindex3\ shows a heating curve, a plot of temperature versus heating time, for a 75 g sample of water. A close look at a heating and a cooling curve heating. Occasional stirring with a glass stir rod will accelerate the equilibrium. We analysed the heating curve of water which is described in textbooks. Remove test tube sample from the hot water bath and place in into a test tube rack. So what does the opposite of heating curve look like. This graph goes in your quantitative observations section.
From the plot temperature versus time the following data are important. Nect gr 10 heating and cooling curve of water youtube. What would the hypothesis be for doing a heating and. Heating and cooling curves also called temperature curves. Place about 150 ml deionized water into the 250 ml beaker and add enough ice to form a slush.
As heat is steadily added to the ice block, the water molecules will begin to vibrate faster and faster as they absorb kinetic energy. Boil 150 ml of water and record the temperature of the water in increments of sixty seconds. Isaac physics a project designed to offer support and activities in physics problem solving to teachers and students from gcse level through to university. Question 10 a learner returns home from school on a hot afternoon. You will use these results to plot your own heating curve for water. Different substances have different melting points and boiling points, but the shapes of their heating curves are very similar. Apparatus beakers ice bunsen burner thermometer water chipa thomas. Looking from left to right on the graph, there are five distinct parts to the heating curve. What happens when you let a cup of ice sit out on the counter for several minutes.
Below is a cooling curve that shows the process of going from gas to liquid, and then back to ice cube. Heating curve for water, lab heating curve for water. Hot water loses heat when it is left at room temperature. We can draw heatingand cooling curves for any substance. This is assisted by an experiment in real classroom con. For different start temperatures, repeat steps 37 but turn off the burner at the desired temperature. Full text of physical science grade 10 teachers guide. Heating and cooling curve of lauric acid objectives examine the effects of the heating and cooling of a pure substance through phase change. Aim to investigate the heating and cooling curve of water. Inthis paper,however,weshallconfineourselvestotheconsideration. The cooling experiment is performed with the calorimeter, filled with same volume of water and turpentine oil successively, by maintaining the same temperature difference between the calorimeter and the. After 1 minute measure the temperature again and record it.
Siyavulas open physical sciences grade 10 textbook, chapter 3 on states of. What would the hypothesis be for doing a heating and cooling curve of water. Allow the ice water mixture to come to thermal equilibrium which should take about 5 minutes. Before repeating the experiment, check the level of water is still 150ml some may have evaporated and add more water if required. Apparatus beakers ice bunsen burner thermometer water physical sciences break 1. Solid ice is heated and the temperature increases until the normal freezingmelting point of zero degrees celsius is reached. If ice cubes are used, add sufficient ice to increase the volume by about 50 ml. Tenth graders examine the heating curve of water when head is added constantly over time. Observation ii after a while the water becomes cold and the ice cubes melt.
If not, explain how your prediction differed from the experiment. Apparatus beakers ice bunsen burner thermometer water chipa thomas maimelas insight. The water could then be cooled to 0c, at which point continued cooling would freeze the water to ice. Fill a test tube with naphthalene until it is about a quarter full. Siyavulas open physical sciences grade 10 textbook, chapter 3 on states of matter and the kinetic molecular theory covering states of matter. Experiment in the first experiment we investigated the specific heat of water. In order to get cold water to drink, she puts ice cubes into a glass of water.
The boats got their power from steam liquid water converted to a gas at high temperatures. In the heating curve for iron, describe the phase change that occurred between points b and c on the graph. Use the data to make a graph to determine the boiling point of water. An experiment combined with some simple heat transfer calculations is discussed. The water was heated by use of an electric current passing through a resistor. Term prescribed practical activi recommended practical ac ties for formal assessment tivities for informal assess ment term 1 experiment 1 chem practical demonstration istry.
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