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There were different science experiments set up. Each experiment contained different materials or substances. We observed the change in the materials or substances. We described the changes by comparing what the material looked like before and after.  Lastly, we decided whether the change was reversible or irreversible.

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Candle
The original one is still whole and it doesn’t have any wax that is melted
The second one which is on fire has half melted and the last one is completely melted the change is not really reversible because it has already melted so it cannot be reversed back into its own shape but it can still be set again just not in its original shape.

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The sprayed perfume left out went into little ice cube looking things. I think they dried up and I reckon if you crushed them it would go back to liquid.

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The candle was burning away all the wax.
We don't think this is reversible because the wax was burnt by the fire. 🕯🕯🕯

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The chocolate is black in spots🍫
It doesn't look soft like melted chocolate
It can't be reversed

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When you light a candle it has a stick and lots of wax when you wait a bit some of the wax disappears and the stick turns black and if you leave it even longer the wax is nearly gone. This is not reversible because it disappearss.🎧

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you cant get the wax back on the candle because the fire melts the wax. the origanile candle was up to the top the 2nd one was melted a bit.the last one was desintergrated

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Bella’s almond milk experiment🥛🥜 When the almond milk is on the paper it looks white and very liquidy! It smells like almonds and looks like chunky milk. ( unless it’s melted like it’s starting to now ) it can be revearsed because you can put the lid on and put the carton in the fridge❄️🥛🥜
BY BELLA🥛

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We put the tablets in the water
It fizzed like a volcano
I don't think it can be reversed

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We did the perfume one and if you spray the perfume on to the blue lid it sort of turns into a little bit of ice this science experiment is irreversible because you can't put the ice back in to the perfume thing

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the tablet sunk to the bottom of the cup and when it was half dissolved it went to the top of the cup. The change to the tablet is not reversible as you cannot get the tablet back.

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When the tablets entered the water they started to bubble and dissolve.
We don't think this is reversible because the second time he tablet entered the water it started to dissolve. 💦💦💦

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A green sticky liquid that was once a icy pole and has been left out to melt it is spreading I reckon if this got put back into the freezer it would turn back into ice.

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Bi carb soda & tartaric  acid
The powder mixed together and reacted by bubbling and forming a sort of gooey substance and after a while it desolved and we do not think that it can be reversed because the powders has desloved or turned into goo and cannot go back into powder

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We did the icy pole one and originally it was a normal icy pole and then we left it to melt this is reversible cause if .you put it back in the freezer it will turn back to ice the only difference would be that the icy pole would be different colour

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Bellas melted chocolate experiment 🍫 the chocolate melted because of the air temperature. The air temperature is too warm for the chocolate to be kept out for too long🔥. This chocolate can be reversed because you can seal up the chocolate and put it in the fridge❄️.
BY BELLA🍫

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When the bi-carb soda and the acid mixed it over flowed.
We don't think it can be reversed because we can't get the bi-carb soda or the acid out of the water. ⚗⚗⚗

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The candle has melted and there is a pool of wax
The third candle has almost no wax
It can be reversed if you put more wax in it

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I observe burnt chocolate the chocolate has overlapped and got a black tip I don't think this can go back to normal

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We did the chocolate one in the pink bucket this chocolate is irreversible because it has already been burnt so you can't unburn it it also smells like ashes so you could tell it had been burnt

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We put the Tarmac acid and the bicarbonate soda
It was a powder but now it is a liquid
It is not reversable

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The bi-carb soda bubbles with tartaric acid and grows to the top with bubbles. This is no reversible because how are you going to reverse the bubbles.💧💧

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We (Sofia) put Tarmac acid and bi carb soda in a glass with water and it was fizzing up this change could not be reversible because you can't put the Tartaric and bi carb soda back in its box

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When you spray the Purfume it expanded across the lid
It cannot be reversed because the perfume can not be put back In the bottle

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Perfume bottle...
There was like oil on the lid and when we sprayed it with the perfume it pushed the oil away and we can’t reverse it because the perfume can not be put inside the bottle.

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We added tartaric acid and bicarbonate soda into a glass of water
And it started fizzing.we don’t think this is reversible as the powdered chemicals
Have already dissolved in this water.

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Lochie and Curtis

The chocolate was burnt. The chocolate turned black and crispy. This change can't be reversed because you can't unburn something.

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.salt in water
.when in water it turns glassy
.if left in the sun it may dry and be reversed

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The icypole has melted inside the wrapper. It was originally a hard solid and now it's like a liquid. I think the change is reversible because if you put the icypole back in the freezer I predict it would turn to ice again.