The Physical properties of a substance determine the physical changes it can undergo
The Chemical properties of a substance determine the chemical changes it can undergo
The Candle(Guided)
Learning: Physical and Chemical Change. - Thinking about the Chemical Change Vs The Physical Change, Prediction, Generating Questions, Cause and Effect, Research and Discussion
Vinegar and Baking Soda - (Independent)
Thinking about the Chemical Change Vs The Physical Change, Prediction, Generating Questions, Cause and Effect, Research and Discussion.
Physical properties include smell, colour, texture, melting point, solubility, conductivity and so on....
Physical properties can be seen, heard, felt or physically measured
Altering the physical state of a substance will not change it into another substance.
Chemical properties involve the ways in which substances react with each other to form new substances. The chemical properties of a substance include the ways it reacts with acids, bases, oxygen, water and so on....
Altering the chemical state of a substance will result in that substance changing into a new material.
To see more reflections see the comments on this post
To see more reflections see the comments on this post
I think I did ok that chemistry session and I found out that chemical changes are much harder to find then physical changes.
ReplyDeleteWell done on being organised and getting your evaluation on first. You need to add more to this Michael. Check out some of the more recent comments.
DeleteI think I did well in the chemistry activity and learned that there is a chemical change as well as a physical change when a candle is burning. I found that the chemical change was a lot harder to see than the physical.
ReplyDeleteWhat questions did you create to prompt new learning?
DeleteDid you do any research?
What are your next steps?
I think I did well this afternoon. I learnt a lot about physical and chemical changes, and I did not know there was a physical and a chemical change in a candle. I found, like Michael, that it was harder to find the chemical change and quite easy to find the physical one. I enjoyed the learning activity and had fun learning!
ReplyDeleteAnd my question is what element is a candle?
DeleteAbel, a candel does not have any singular elements
DeleteToday was ok in general apart from the fact that our candle fell on me. I could find the chemical reaction and the physical reaction relatively easily although I did need a little bit of help finding the chemical change.
ReplyDeleteI think I did pretty well in the chemistry activity. I learned that like Michael finding chemical changes are harder to find physical changes.
ReplyDeleteThe chemistry activity was very good because I learnt that there is a physical component and a chemical component to a candle. It was also fun because we learnt how to observe something and get details from it.
ReplyDeleteIt think I did well in this activity and learnt a lot.
My only questions were:
How do you determine the speed of a candle burning? And if there is a speed, what is the average time a 10cm candle burns for?
Is there different types of wax and if so would the affect the rate if the candle burning?
Excellent reflection Jackson! What are your next steps?
DeleteI think I did well, I could identify the physical changes, I found out that the chemical changes were harder to find.
ReplyDeleteI agree with Marina, the physical changes are easier to identify than the chemical changes for me. I think that I did well.
DeleteI enjoyed yesterdays activity. The physical change was very easy to see, but i couldn't think of the Chemical one. Once i knew what it was however, i thought that i should have realised it earlier. I learnt that there is a chemical change for lots of things, even if you cant see it at first.
ReplyDeleteI also had a question:
How would the speed of the candle burning make a difference to how the chemical reaction takes place.
My next step is to see more chemical reactions in a candle, I saw a lot of physical changes though. When we did our second experiment I found it a lot easier to see chemical and physical changes. My questions were...
ReplyDeleteIf we were each using different brands of baking soda how different would the reactions be?
Do different candles produce different wax?
If we had not used malt vinegar and used a different sort would it have bubbled over more or less?
I didn't do this session, but when I saw the candle picture I didn't know that one thing could have physical reaction and chemical reaction. It looks fun. I wish I was there : (
ReplyDeleteThe chemistry we learnt today was really interesting the more of the vinegar or baking soda effected the results dramatically I also learnt that wax is solid at room temperature and liquid when the candle is lit.
ReplyDeleteI think in this task i did quite well but i think there is definitely room for improvement as i found it hard to find the chemical reaction for the candle and the the fire, I think what i needed to do was look more at the candle and not just look at the front. For the baking soda and vinegar it was easy with physical change and the chemical reaction because it fizzed up in front of you and yuo could easily what was happening.
ReplyDeleteI think that discovering the physical changes and reactions was rather easy because the physical reaction was visible to see and there was no change in element, just change of state. The chemical change, however, was a different story. Since the chemical change has no difference really in the look of the candle you could not see the reaction, and the change in wax and the string was quite confusing because we had no idea what it was turning into. Next steps, well, I think that I could have gone through more with my ideas and i could have agreed more with other peoples ides.
ReplyDeleteTavish
I think I did pretty well, I learnt that physical changes happen all the time but chemical changes only happen when the elements combine. The baking soda and vinegar was really fun to do as well and I learnt a lot about reactions and physical and chemical changes
ReplyDeleteI enjoyed doing the chemical experiments and looking at the physical and chemical changes. We looked at the physical and chemical changes. I researched Carbon monoxide that is a gas that pollution can be made of. Furnaces and water heaters use this. We thought of this when we were looking at the candle. I also looked at acidic acid that causes the reaction with the baking soda.
ReplyDeleteNext Steps
I need to 100% understand the difference of physical and chemical changes.
Further questions.
What kinds of brands and companies use acidic acid?
I wasn't going to comment on this as I was doing other work but I think I might as well.
ReplyDeleteI found it interesting that the candle blackened when we melted the wax from the candle and the flame was hitting the candle itself, yet when you have a candle upright that doesn't happen at all.
Does the type of candle effect the blackening of the candle?
How long would the average candle burn for at room temperature?
ReplyDeleteI found the candle experiment both fascinating and challenging. I saw the physical reaction instantly. It was easy for me. I saw a second physical reaction within 30 seconds of the first. The wick and the wax was disappearing, changing in to gas. Physical. Or so I thought. I began to debate wither it was a chemical or a physical. I decided that it was physical. But I was not 100%. I asked our teacher Mr Eames and he gave me hints on what the chemical change was. All signs pointed to that it was a chemical change. But why? Why was It chemical? What was the wax and the wick turning into? I had to find out. I found out that the wax was changing to soot. Soot is coal. Compressed coal = diamond and diamond is pure carbon (C). carbon makes up all living things on earth. Without carbon we would not be alive. Carbon facts: C and atomic number 6. As a member of group 14 on the periodic table, it is non-metallic and tetravalent—making four electrons available to form covalent chemical bonds.
ReplyDeleteI enjoyed this activity because we had some interesting debates about charcoal and coal. I found the physical reactions fairly easy to pick but the chemical reaction needed to be discussed. The physical reaction we found was that the wax was melting. Then we started talking about what happens to the wax after it burns and we began discussing charcoal, and the coal, and diamond and carbon. I’m wondering now how coal is made, and do different candles burn faster or easier depending on what kind?
ReplyDelete