Wednesday, May 12, 2010

method and equipment and aim and hypthesis

Hypothesis: when melted, a candle will lose mass and become lighter.


Aim: to determine if candles lose mass when burnt and how much mass is lost from different candles when melted


Method:


a) Equipment:

5 different candles

Centigram

Timer

Plastic plate

Matches


b) Method:

1. Collect the equipment and set it up

2. Burn a candle for one hour and calculate mass loss at 10 minute intervals in percentage mass loss

3. Repeat step 2 for the other four candles

4. Observe the changes of the candles and other notable points of the experiment

5. Record results in a table and also plot the results on a graph

6. Clean up experiment area and put away equipment

climate graph


hi...

my scanner broke and it hasn't been fixed yet...so this is a picture of the graph. I know its not great quality but you have to make the most of a bad situation.

here it is...

Saturday, May 1, 2010

done some research

I have been researching how candles and burn and why. This is for some background knowlegde on my SRP experiemnt. this is what I hace deduced so far:
- candles burn the wick (usally made from a rope that has high levels of flamability e.g twine)
- They burn from the centre outwards, butnot evenly. Depending on the way the wick is facing it (due to wind or dodgy manufacturing), the candle will burn on one side more than the other
- when a candle burns: some of the candle truns to hot liquid wax, the rest evaporates (sometimes leaving a pleasent scent)
- the candle is its own fuel. The height and quality of the candle and its wax will determine how long it will burn.

so this is just some research that I have done. I will post some other things later

xxoo