Question:

Expansion during heating

Updated On: Jul 6, 2022
  • Occurs only in solids.
  • Decreases the density of the mate
  • Occurs at the same rate for all liquids and gases
  • IncreasesThe weight of the material
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is B

Solution and Explanation

Density is mass divided by volume. As you heat something up the volume increases so the density decreases. Water is a bad example, it does not follow the standard rules. Its volume is smallest at about $4^{\circ} C$. As you cool or heat it from this point the water will expand. This is why ice floats, whereas most solids will sink on their corresponding liquid state.
Was this answer helpful?
0
0

Top Questions on thermal properties of matter

View More Questions

Concepts Used:

Thermal Properties of Matter

Anything that has mass or occupies space in the universe is commonly known as matter. There are five properties of matters namely chemical, mechanical, thermal, dimensional, and physical properties.

Read More: Thermal Properties of Matter

Heat Capacity:

The quantity of heat needed to change the temperature of the matter by 1° is known as the heat capacity of a material. The temperature is indicated in kelvin or Celsius and the amount of heat is shown in calories or joules. Specific heat capacity or molar heat capacity is used to calculate the heat capacity of the matter with the stated dimension.

Linear expansion is the situation when change takes place in one dimension or dimensional.

Thermal Expansion:

When heat is passed through the material, the change in the area, volume, and shape is recognized as the thermal expansion property of the material. The expansion of the railway tracks due to maximal heat which leads to accidents is an example of thermal expansion.

Thermal Conductivity:

This property is interconnected to the conductivity of heat. The amount of heat regulated by the material is directly proportional to the conductivity of the material. Not all objects have the capacity to conduct heat throughout their bodies. Insulators are such objects which do not have the property to conduct heat throughout their body.

Thermal Stress:

The stress due to thermal contraction or expansion of the body is known as thermal stress. The explosion of materials takes place due to thermal stress which is dangerous. The cracks on the truck tyres are caused by an outcome of thermal stress. Trucks at high speed generate heat which is caused by the friction of the truck tyres and the road surface.