Hypothesis: When you put the two together with the hot water on the bottom, the hot water rises to the top, mixing with the cold water along the way. This is due to the density of two temperatures. Variable: The variable for this experiment is the temperature of the water. Aim:Do hot water and cold water mix? Equipment : * Two identical small glasses. * Hot water * Cold water * Food coloring * Index cards * Scissors * A shallow baking pan (if you don't have one, do this experiment in the sink) Method: 1Fill one of the glass with very hot water. Add a drop of red food coloring. 2Fill the other glass with cold water. Add a drop of blue food coloring. 3Cut about a 10cm sided square. 4Slowly add more water to the blue glass until you can see a bulge of water over the rim of the glass. 5Lay the square card carefully onto the top of the blue glass. Tap the card gently with your palm. 6Pick up the blue glass and turn it straight upside-down. You don't need to put your hand on the card. The water will hold the card in place. (If the glass is tilted but not turned over completely, the water will gush out.) 7Put the upside-down blue glass right on top of the red glass. 8Have someone hold onto both glasses while you very slowly and carefully pull the card out. 9What happens? What color is the water? What color is the water in the both glasses? 10Rinse both glasses. Repeat steps 1 through 6--but put the glasses with the blue-colored cold water in the baking pan and put the card on top of the glass with the red-colored hot water. Turn the red glass upside-down and put it on top of the blue glass.
2. Drop a gummy bear into each of your prepared beaker or cup and place the beaker or cup
Then add 3-4 drops of rennet to the milk in the beaker and stir it to
4. Pour about 300mL of tap water into the beaker. Set up a hot-water bath using a hot plate, retort stand, and thermometer clamp. Alternatively, use a Bunsen burner, retort stand, ring clamp, thermometer clamp, and wire gauze.
Remove the metal object from the first beaker and insert it into the second one.
Plan 1. Collect 4 different sized beakers 2. Boil some water in the kettle 3. Pour 50ml into each beaker 4. After 1 minute check temperature 5.
Start with the hot water and first measure the temperature. Record it. 8. Then pour 40 ml into the beaker. You can measure how much water was used by looking at the meniscus.
3.) Divide your 30g of white substance into the 4 test tubes evenly. You should put 7.5g into each test tube along with the water.
In a 100ml beaker place 50mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved.
Toss it with a pastry blender or fork, till it resembles the coarse meal. 3. Pour 4 tablespoons ice-cold water and continue the tossing with the fork properly, till the entire mixture gets moistened. If the quantity of the water is less, then add more. But, do not exceed the limit.
Step5-Put a bar of paraffin in the big cooking pot(gum side up),put it on the burner and turn on the flame(high heat).When the bar melts put in another and when that melts another…until all are melted.(If any impurities rise to the top,skim them off with a spoon or mesh spoon.There shouldn’t be any if the gum is clean.)
I took another glass and placed it in the ice bath and set my bowl on the counter. Then I took my last glass and just put it on the counter. Then I took plastic wrap and covered up the jars. After five hours, I took the strings out of their jars and left them for a few hours to completely dry.
1. Obtain a clean, dry crucible and lid, then heat them for approximately 5 minutes over a Bunsen burner
3rd create wells: put a comb template in middle of the tray; wait until the mixture becomes solid. After,
2. In a small bowl combine natural sweetener, matcha and hot water. Stir until sweetener is dissolved.
We decided to use 2 minutes, as this gave the best results. We repeated the experiment fifteen times, firstly heating 50cm3 three. times, then add 25cm3 of water each time, so from 50cm3 to 350cm3. After each repetition we rinsed the beaker so as to make this a fair. experiment.