physical change
Mass is the property of matter on which gravity act upon.
On heating any substance get more energy and due to that its bonds breaksing process starts. Most solids expand when heated, a familiar phenomenon with many practical implications. Among the rare exceptions to this rule, the compound zirconium tungstate stands out by virtue of the enormous temperature range over which it exhibits so-called "negative thermal expansion," contracting as it heats up and expanding as it cools, and because it does so uniformly in all directions.
Gravity is a fundamental force that results from the interaction of matter. While gravity can influence matter by attracting objects toward each other, it is not considered matter itself because it is a force that acts upon matter rather than a physical substance.
Thermal expansion in solids is normally very small - typically around one part in one hundred thousand for a one Kelvin temperature change. That means that a one metre long length of aluminium, for example, will only change size by 0.23mm when heated by 10kelvin - effectively invisible to the human eye. Thermal expansion, though can be visible to the unaided eye if the object is large enough - a kilometer long bridge, for example, may vary in length by as much as a metre or more between summer and winter, depending upon the seasonal temperature change, and will have expansion joints that allow sections of the bridge to expand into one another without changing the overall length of the bridge, and risking damage to the structure. If you were to look at these joints in winter and then in summer, you would see the difference that thermal expansion makes.
Temperature has no effect upon mass. If you boil a liquid, some of it will evaporate off. This may have the effect of lowering the mass of what remains. But the mass should remain constant. What would change, however, is the volume and density, in accordance with the famous equation: m=vd. Mass is the product of volume and density.
physical change
physical change
The expansion of matter upon heating is an example of a physical change. This is because the substance undergoes a change in form or appearance without forming a new substance.
The relationship is a matter of cause and effect. An independent variable is given as one upon which another variable depends. So, for example, if you heat a metal pipe, the pipe expands. The amount of expansion is dependent upon the amount of heating that occurs, so expansion is the dependent variable, and the heating, which you may or may not control, is the independent variable. All it means is that if the independent variable ungoes a change, there is an associated and predictable change in the dependent variable. The two are linked inextricably, but one is cause, the other is effect, or to put it another way, you control the change in the dependent variable with input into the independent variable, but it doesn't normally work the other way around.
yes,according to relation coefficient of linear expansion depends upon original length.
explain why the iodine test gave such results upon prolonged heating
The change of ice to a liquid is melting; the direct change of ice to a gas is sublimation.
Yes
The property is flammability.
evaporation
The solubility of silver chloride increases five fold upon heating to 100°C.
Depending upon your location and the amount of heating oil you have your local heating oil distibutor may buy back your unused heating oil, if for example you are switching to gas. If you are moving house it would probably be easier to see if the new owner will purchase the oil from you. If you are based in Northern Ireland or mainland UK get in touch with ValueOils.com who may be able to help you out.