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.
7.) After you have heated them to the right temperatures, pour the excess water into a dry evaporating dish. ( Be sure not to get any of the substance in your solution. )
in 5cm³ of water and add 4cm³ of ethanol. We had tom pour this mixture
Then add 3-4 drops of rennet to the milk in the beaker and stir it to
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
Place the evaporating dish on the iron gause and heat the hydrate on low for two minutes, then high for five.
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.
* Heat the end of the glass tube so as to close it. The tubeÂ’s end
Journal: when i was doing my experiment the first thing i had to do was get my materials that are 1) clear drinking glass 2)¼ cup of vegetable oil
I shall add water as that is the only way I can find out how
for one minute only, use 20cm3 of water and make sure the tip of the
1. In a glass add mint leaves, lime juice, sugar and green tea powder into a glass.
2nd step heat the mixture: Make sure the agarose dissolves. Wait until it boils and when you are going to transfer the mixture, wear gloves to avoid getting burnt. Transfer the mixture into a removable gel tray.
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.
Should be wash the glass in a separate basin in warm soap solution and vinegar.