they all burn at the same rate
A white crayons melting point is 140'F-165'F
Melting is a physical change.
The hypothesis for the melting and freezing point of naphthalene could be that the melting point of naphthalene will be higher than its freezing point due to the typical behavior of most substances where solids melt at higher temperatures than they freeze. The hypothesis may also include factors like the purity of the naphthalene sample affecting its melting and freezing points.
physical change
Rose Art crayons tend to melt faster than Crayola crayons primarily due to differences in their wax composition and quality. Rose Art may use a lower quality wax or a different blend of materials, resulting in a lower melting point. Additionally, the manufacturing process and additives can also affect how well the crayons hold up to heat, making Rose Art crayons more susceptible to melting.
physical change
physical change
No, it is not safe to put crayons in the microwave. Crayons are made of wax and can melt unevenly, potentially causing a fire hazard or releasing unpleasant fumes. Additionally, the melting process can create a mess that is difficult to clean. It's better to use safer methods for melting crayons, such as a double boiler or a hot plate.
You have to heat up the crayons until it reaches its boiling point.
Yes, melting crayons is an example of a physical change. During this process, the crayons change from a solid to a liquid state due to the application of heat, but their chemical composition remains the same. When cooled, the melted crayon can solidify again, demonstrating that the change is reversible.
No it is an example of a physical change
This is the melting point.