This term our class is studying how a change of state between a solid or a liquid can be caused by adding or removing heat. As part of our science unit Melting Moments we would like students to think about when melting is commonly seen in the home. The children have been undertaking some experiments in the classroom and their task this week is to;
Experiment with something at home that will change from a solid to a liquid or a liquid to a solid by adding or removing heat.
1. What was your experiment?
2. What did you do to change your object? What did it look like? How long did it take to change from a solid to a liquid?
3. Can you change it back into its original form/shape?
Please use some great scientific words in your comment so others can also learn from your experiment.
If you would like me to put up some pictures that you have taken of your experiment on the blog, please email them to me. Otherwise please bring in a photo or a drawn picture of your experiment next Wednesday 11th February for our science lesson.
Happy experimenting :)
My experiment was melting ice. To change my object I took the ice out of the freezer and put it in a bowl and I took the bowl outside. The ice was originally in a cube shape and then it liquefied (turned into water). It took fifteen minutes because it was raining and it was cold. The freezing point of water is zero degrees Celsius. I can not change the ice back to its original shape without using a mould and putting it in the freezer where the temperature is below zero.
ReplyDeleteEMILY .LIVINGSTON
ReplyDeleteMy experiment is melting block butter. I took 25g of the block butter from the fridge. I put a pan on the stove at setting number five (5).It looked foamy when it had melted.
To change from a solid to a liquid it took one minute and fifty-two seconds. I can not change the butter back to its original shape. When I put it back into the fridge it didn't look the same. The colour was darker and it looked a little lumpy.
Solid chocolate, we melted chocolate in the microwave, and it went into a thick liquid, which was soft and yummy. it took 50 seconds. when it cooled off it, went back to a solid form but not original shape.
ReplyDeleteMy experiment was melting chocolate. I put the chocolate block in a glass bowl and then the bowl was put into a saucepan of boiling water. The hot water melted the chocolate . It looted like a big blob. it took 1 minute to change from solid chocolate to melted chocolate. I could not get it back to its original shape , so I put it on biscuits and ate them.
ReplyDeleteI melted an ice block. I put it outside in the sun. It melted quickly because it is a warm day. I then put it back in the freezer and it returned to its frozen shape. I might eat the ice block now!
ReplyDeleteMy experiment was melting butter. The butter was a solid in our fridge. I put it in a saucepan on the stove and added heat.
ReplyDeleteI used a stopwatch and it took 50 seconds to turn into a liquid. It looked bubbly.
I took it off the stove and it started to cool it looked frothy with lumps.
It can go back to a solid if I put it in the fridge but it won't have its original shape.
I melted an ice cube for my experiment. I put it on the bricks, in the sun. The bricks were warm and the sun was too. At first the ice cube looked like an ice cube, when it started to melt it looked like a tiny water puddle. When it finished melting it was a much bigger puddle. It took six minutes, twenty-one seconds. I didn't put it in the freezer because it was melted on the bricks. If I had of put it in cup it would've froze.
ReplyDeleteI melted butter . I put it in the microwave . It took 30s for it to melt . It turned into a liquid and bubbled. I put it in the freezer and it didn't turn back to its normal shape.
ReplyDeleteToday I melted a Tea Light Candle. I lit the candle with a match and it took 9 seconds to start melting and 15 minutes to fully melt. I then blew the candle out and it took 9 minutes to turn back into a solid candle.
ReplyDeleteToday I heated a raw egg in a pan. First photo shows a non heated egg. Second photo is heated for 1 minute. Third photo the egg is heated is for another 3 minutes
ReplyDeleteending up totally fried
On Sunday I melted a cube of ice.It started at 11.45 am and finished at 12.30 pm. I heated it over hot water and at the end it looked liked water. I couldn't freeze it back into a cube. If I tip the water back into the ice cube tray and freeze it, it will go back to a ice cube.
ReplyDeleteWe left a jar of smooth peanut butter in the sun and the whole jar melted and was runny like water, then we put it in the fridge and it turned back to normal peanut butter.
ReplyDeleteI melted an iceblock. I tipped it on to the ground in the sun and it took 7 minutes to turn into liquid. As it melted I started to see through it. At the end it was just a puddle. If I melted it in a bowl then I could put it back in the freezer make it a solid again
ReplyDeleteTess Keaveny.
ReplyDeleteMy experiment was melting candle wax. I used the flame as heat from another candle. The wax looked like water and it took 3 seconds to change to liquid. No, it can't change back into its original shape.
For my experiment I chose scented wax. First I brock a square of was off and placed it in the warmer dish. I turned the warmer on and the element heated the dish up to just above body temperature and liquifies the wax, it took 10 minutes to liquify. If I was to poor the wax back into the mold it would return to its original shape and solidify once cooled down to room temperature.
ReplyDeleteROHAN WATSON
ReplyDeleteMy experiment was to see how long it took for ice too melt in different environments. We put 2 blocks of ice in containers, one inside and one outside. We then timed them to see how long it would take to melt. We added food colouring to water before freezing to make the ice green. This made it easier to see. It took 60 minutes for the ice inside to melt and 65 minutes for the ice outside to melt. If we poured the melted ice back into it's original container, it would have changed back to its original shape.
My experiment was melting margarine. I put 4 scoops in the microwave for 35 seconds. It became liquid. I then placed it back in the fridge. In half an hour I checked it again and it had become solid. It was in the shape of the bowl I melted it in. The colour was darker than before.
ReplyDeleteMy experiment was melting chocolate.I put a half chocolate bar in a bowl into a pan of boiling water.It took 7 minutes and 27 seconds then I put it in the fridge in a container for half an hour then I took it out.It turn back in to a chocolate bar but it didn't turn back into it's original shape.
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