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The length of a brass rod is found to be smaller on a hot summer day than on a cold winter day as measured by the same aluminium scale do you conclude that brass shrinks on heating?
No, the brass rod could be expanding or contracting due to changes in temperature, but it does not necessarily mean that brass shrinks on heating. Temperature changes can cause thermal expansion or contraction in materials, including brass. To determine if brass specifically shrinks on heating, a controlled experiment measuring thermal expansion coefficients would be needed.
When a substance cools down it c................?
When a substance cools down, it contracts or shrinks in volume. This is due to the decrease in kinetic energy of the particles, causing them to move closer together and reducing the overall volume of the substance.
Does the rate of heating equal to the rate of cooling of a substance?
No, the rate of heating and the rate of cooling of a substance are not necessarily equal. The rate of heating refers to how quickly a substance gains heat energy, while the rate of cooling refers to how quickly a substance loses heat energy. These rates can be different depending on factors like the material of the substance, the temperature gradient, and the presence of insulation.
What is the name of the substance that evaporates during the heating of the solution?
The substance that evaporates during the heating of a solution is the solvent. This process is known as evaporation or steam distillation depending on the method used.
Why does ferromagnetic substance become paramagnetic on heating?
Heating a ferromagnetic substance causes the heat to disrupt the magnetic particles thatÊpoint in the same direction and therefore it becames paramagnetic which is barely magnetic at all.
When heating a substance what happens?
Heating a substance can result in a chemical reaction, which usually results in a simple combustion reaction. This is because Oxygen, or O2, is added to the substance, which can dramatically alter the substance.
Substance left after heating coal or petrol?
The substance left after heating coal is coal ash. The substance left after heating petrol is a residue called coke. Both of these byproducts are typically composed of carbon and other elements.
The length of a brass rod is found to be smaller on a hot summer day than on a cold winter day as measured by the same aluminium scale do you conclude that brass shrinks on heating?
No, the brass rod could be expanding or contracting due to changes in temperature, but it does not necessarily mean that brass shrinks on heating. Temperature changes can cause thermal expansion or contraction in materials, including brass. To determine if brass specifically shrinks on heating, a controlled experiment measuring thermal expansion coefficients would be needed.
What do we call substance which changes readily into vapour without heating?
A substance that changes readily into vapor without heating is called a volatile substance. Examples include alcohol and acetone.
What is a solid substance left after heating coal or petrol?
The solid substance left after heating coal is called coal ash, while the residue left after heating petrol is known as petroleum coke. These solid substances are byproducts of the heating process and can vary in composition depending on how the coal or petrol was processed.
When a substance cools down it c................?
When a substance cools down, it contracts or shrinks in volume. This is due to the decrease in kinetic energy of the particles, causing them to move closer together and reducing the overall volume of the substance.
Do the particles of a substance move faster or slower as the substance?
With the help of heating the movement is faster.
Does the rate of heating equal to the rate of cooling of a substance?
No, the rate of heating and the rate of cooling of a substance are not necessarily equal. The rate of heating refers to how quickly a substance gains heat energy, while the rate of cooling refers to how quickly a substance loses heat energy. These rates can be different depending on factors like the material of the substance, the temperature gradient, and the presence of insulation.
Heating curve illustrates what?
When a substance is heated, a heating curve shows the changes in temperature as well as the physical state of the substance. A heating curve can chart the temperature versus the time elapsed as the changes take place.
A solid substance after heating coal or petrol?
coke
How do you change a substance change of matter?
By heating or freezing.
How do you change a substance state of matter?
By heating or freezing.
