Practical Problem re melting points

In summary, a layman is seeking advice on how to prove that his son's act of tossing a hot wax candle out of a window could not have caused criminal damage to a neighbor's car and driveway. A lawyer has been consulted, but the layman is looking for a definitive answer. Suggestions include consulting a lawyer, conducting a demonstration with a sheet of metal coated in automotive paint, and measuring the surface temperature of a car's hood. The layman also considers the possibility of the wax staining a porous driveway, but this may evaporate in the hot sun.
  • #1
dave.w1443
2
0
Hi all,

I am posting as a layman, whose 16 year old son has been issued with a court summons for criminal damage against a neighbour's car and driveway.

A few weeks ago my son thoughtlessly emptied a small glass candle jar out of his upstairs bedroom window into what he thought was the hedge. Unfortunately it went over my neighbour's block paving driveway and his daughter's Vauxhall Corsa. He is claiming criminal damage of £2500 to relay his driveway (the exact block is out of production and he refuses to let us try to clean it up) and £450 for a respray of what he claims is blistered paint on th car roof caused by the hot wax. I suspect that the damage was already there.

As a layman it seems to me implausible that molten wax would blister car paint, and I have even proved as such on my own car, but can anyone help me to prove it for the purposes of a court case? Is there a table of melting / boiling point of matrials, which would show this cannot happen? Sorry to take up space on this forum but I am determined to prevent my son getting a criminal record just because my neighbour is trying it on...
 
Physics news on Phys.org
  • #2
It might be in your and your son's interest to consult a lawyer in regards to damages and criminal record, since you mention a summons for criminal damage.

He/she might advise you whether the distance from the window to the hedge, driveway and car would have some bearing on whether the tossing out the window of hot wax could be considered a thoughtless act or one of intent by the court.
 
  • #3
Thanks, a lawyer is on the case but we just needed a pointer for the definitivee answer
 
  • #4
You could take piece of sheet metal similar to that of the car, coat it with a sample of automotive grade paint and demonstrate in the courtroom the effects of hot wax on the paint,and submit the piece of metal as evidence. It may or may not work, but if your claim is correct then no damage would be done.
 
  • #5
The oil in the candle was may soak in and stain a porous driveway paver but I'd want to wait for summer to see if it evaporates in the hot sun.

For the car: cars can get hotter on a normal sunlit summer day than candle wax, plus candle wax has an extremely low heat capacity (which is why you can dip your finger in it and not get burned), so I don't see any way it could possibly damage a car's paint job. My advice would be to measure the surface temperature of a car's hood with the engine running (may be difficult in winter...) and compare it to the "pouring temperature" of candle wax, which tops out at about 190F (88C): http://www.nuscentscandle.com/melt-point-and-pour-candle-wax-temperature-chart/

rlingineni's idea is good too, but I'd modify it slightly: go to a junkyard and find an exterior body panel with a factory paint job to test. You may even want to bake it in your oven or dip it in boiling water to see if anything happens.
 
Last edited by a moderator:

Related to Practical Problem re melting points

1. What is the melting point of a substance and why is it important?

The melting point of a substance is the temperature at which it changes from a solid to a liquid state. It is an important physical property that can help identify and characterize a substance. It can also provide information about the purity and composition of a substance.

2. How is the melting point of a substance determined?

The melting point of a substance is typically determined by heating a sample of the substance until it reaches its melting point and recording the temperature at which it changes from a solid to a liquid. This can be done using various techniques such as a melting point apparatus, capillary tubes, or differential scanning calorimetry (DSC).

3. What factors can affect the melting point of a substance?

The melting point of a substance can be affected by various factors such as impurities, pressure, and molecular structure. Impurities can lower the melting point while pressure can either increase or decrease the melting point depending on the substance. The molecular structure of a substance also plays a role in determining its melting point.

4. How can the melting point be used in the identification of an unknown substance?

The melting point of a substance can be compared to known values in order to identify an unknown substance. If the melting point of the unknown substance matches with a known substance, it is likely that they are the same compound. However, if the melting point is significantly different, it may indicate the presence of impurities or a different compound.

5. Why is it important to record the melting point range of a substance?

The melting point range, which is the range of temperatures at which a substance melts, is important because it can provide more information about the purity of a substance. A narrow melting point range indicates a pure substance, while a wider range can indicate impurities or a mixture of compounds. It is also important to record the melting point range for future reference and comparison with other samples.

Similar threads

Replies
42
Views
6K
  • Introductory Physics Homework Help
Replies
2
Views
2K
Replies
15
Views
6K
Replies
33
Views
7K
Back
Top