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A solid or liquid would not change in density because the volume would not change. The density of a gas would increase when cooled and decrease when heated provided the volume is allowed to change as a function of temperature. However, density of a gas is generally not measured because it is not a useful metric to use.
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That is a rubbish answer.
Almost all solids or liquids expand when heated. (Pure water under "normal" circumstances has an anomalous phase between 0 and 4 deg C). So heating will increase the volume thereby decrease the density.
What else can I help you with?
What are the properties of thermometric material?
when objects are heated or cooled, their temperatures change, along with some of their properties, these properties are known as Thermometric Properties. Examples include: when objects are heated, they expand, when they are cooled, they shrink. Another is, if an object is heated, its' gaseos pressure will increase and will decrease when object is cooled.Read more: What_are_thermometric_properties
What are some ways the density of a substance can be increased and decreased?
The density of a substance can be increased by compressing it or increasing its mass without changing its volume. It can be decreased by expanding it or reducing its mass without changing its volume. Temperature changes can also affect density, with most substances expanding when heated and contracting when cooled.
Why does metal become more brittle after being heated then cooled?
Not all metals do, and it depends on the rate at which the metal is cooled. Basically, in some metals the crystal pattern in the metal changes when heated- and if rapidly cooled, that pattern is sort of "locked in" to the metal. If that locked in pattern is harder or more brittle than the earlier state, the metal has become more brittle. However, heating and then SLOW cooling can make some metals less brittle- it is called annealing.
What happens when molicules are heated?
When molecules are heated, their kinetic energy increases, causing them to vibrate and move more rapidly. This can lead to a change in state from solid to liquid or liquid to gas, depending on the amount of heat applied. In some cases, heating molecules can also cause chemical reactions to occur, leading to the formation of new compounds.
How can solid change?
A solid is transformed in a liquid by melting; some solids are transformed directly in a gas by sublimation.
Why wouldn't the temperature of a substance change when heated or cooled?
There are two points for most substances where a phase change takes place. The energy used to rearrange molecules, called the heat of entropy, must be added or removed before the phase can change. The substances show little or no temperature change at some point in this process.
Is heating milk a reversible physical change?
Heating milk is a reversible physical change because the milk can be cooled back down to its original state. When milk is heated, its properties change temporarily, but it can return to its initial state once cooled.
Can a liquid be changed?
Yes. You can dissolve substances in it to alter its physical composition, it can be heated to a vapour form or cooled to a solid (usually), or it may react chemically with other substances,Yes, in many ways. Here is a list of some ways:Liquids can be heated until they become vapours. Most liquids can be cooled until they solidify.You can add solutes or other liquids to make solutions, homogeneous mixtures or emulsions.Some liquids will react chemically with substances to create different chemical substances.Liquids can be decomposed into some chemical components by electrolysis.
Do metals expand when they are cooled?
No, most substances contract with cooling, only some exotic substances (eg water) expands when cooled.
Is white powder an element when it is heated?
The temperature of a substance does not change whether it is an element or a compound, though some substances will react when heated. White powder is not any particular substance. There are many substances that can come in the form of a white powders, but the only one that is an element is phosphorus. All the rest are compounds, though some of those may break down into their base elements when heated.
Do most solids expand when cooled?
No, most solids contract when cooled, as the lower temperature causes the atoms or molecules to move less, leading to a decrease in volume. However, there are exceptions, such as water, which expands when cooled below 4°C before turning into ice.
What are the properties of thermometric material?
when objects are heated or cooled, their temperatures change, along with some of their properties, these properties are known as Thermometric Properties. Examples include: when objects are heated, they expand, when they are cooled, they shrink. Another is, if an object is heated, its' gaseos pressure will increase and will decrease when object is cooled.Read more: What_are_thermometric_properties
What are some ways the density of a substance can be increased and decreased?
The density of a substance can be increased by compressing it or increasing its mass without changing its volume. It can be decreased by expanding it or reducing its mass without changing its volume. Temperature changes can also affect density, with most substances expanding when heated and contracting when cooled.
Why does metal become more brittle after being heated then cooled?
Not all metals do, and it depends on the rate at which the metal is cooled. Basically, in some metals the crystal pattern in the metal changes when heated- and if rapidly cooled, that pattern is sort of "locked in" to the metal. If that locked in pattern is harder or more brittle than the earlier state, the metal has become more brittle. However, heating and then SLOW cooling can make some metals less brittle- it is called annealing.
What happens when molicules are heated?
When molecules are heated, their kinetic energy increases, causing them to vibrate and move more rapidly. This can lead to a change in state from solid to liquid or liquid to gas, depending on the amount of heat applied. In some cases, heating molecules can also cause chemical reactions to occur, leading to the formation of new compounds.
Are all substances the same before and after burning?
No, some substances change their whole form and others just change their color and shape.
When a substance is heated its temperature increases. What other change might be observed?
Ordinarily when a substance is heated it expands. In some cases it melts. In some cases it vaporizes/evaporates.
