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Why do the densities of most substance decrease with temperature?
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What substance below requires the most energy to raise its temperature by 7 degrees C?
water
Is freezing point of a substance is equal the melting point of the same substance?
The freezing point and the melting point both refer to the temperature at which a substance changes between a liquid and a solid state. If other conditions remain the same, the temperature at which a substance freezes is the same temperature at which it melts. Water is an every day example with a freezing point of 0C, the same temperature as it will begin to melt. Other substances such as metals have significantly higher melting points from around 200C to more than 3000C.
What happens to the melting point temperature as pressure increases?
Corrected:In water, there is a small DEcrease in melting temperature of ice, as pressure increases.Added:In 'Related links' attached to this page (lower left corner) a diagram-picture of"Melting point: Temperature and Pressure" is shown asGreen line for most 'normal' solidsand ofWater-Ice: it is the Green-Dotted line.
Do different densities cause layering?
In most cases, yes. The more dense compound(s) will sink to the bottom, while the lighter (and for our purposes) less dense ones will stay near the surface. If you're speaking from a geological stand point,(eg. - sedimentary rocks) then no, most of the layering is NOT a product of different densities.
During the summer months which change in location would most likely cause a decrease in the observed daytime air temperature?
A change from sea level to 5km above sea level. This will cause dry air to decrease. As air rises, it expands and cools.
Why do the densities of most substances decrease with an increase in temperature?
This happens because the mass of the rod stays the same, but its volume increases. The increase in the volume of matter withincreasing temperature is called expansion. When cooled down, mostmatter decreases in volume and increases in density.
What substance is used to decrease the acidity in soil?
Most commonly limestone is used to decrease acidity.
Why do the densities of most substances derease with temperature?
resistance of only electrolytes and semiconductors decrease wid temp.This is so coz in these substance due to increase in temp, the no. of ions and electrolytes in conduction band increases .Thats why resistance decreases.
What is the density of a substance determine?
It seems that the phrase you are looking for is "physical property". Density depends on several factors, such as: is the substance a solid, liquid or gas (the same substance will have vastly different densities at different states, but density is still a physical property of that substance); what temperature is it being measured at (most substances expand and become slightly less dense when heated); among others.
If 2 pure substances have the same density are they same substance?
No, at a different temperature and pressure the volume of any substance increases or decrease (depending on Temperature and Pressure). Also the severity of the volumetric change depends on the state of the substance. Because density=mass/volume and the volume changes while the mass doesn't the density WILL change slightly in solid phase, noticeably in the liquid phase and significantly in the gas phase regardless of weather or not the substance is pure
What is the density of this substance?
It seems that the phrase you are looking for is "physical property". Density depends on several factors, such as: is the substance a solid, liquid or gas (the same substance will have vastly different densities at different states, but density is still a physical property of that substance); what temperature is it being measured at (most substances expand and become slightly less dense when heated); among others.
What happens when the temperature of a substance decreases significantly A. Most substances will expand. B. Most substances will gain atoms. C. Most substances will contract. D. Most substances will d?
When the temperature of a substance decreases significantly most substances will contract.
What is a fact about the mesosphere most people dont know?
A fact is that in the atmosphere temperature decrease
What is determined by the number of particles of a substance in a solution?
Heat is the speed of the particles the higher the speed the higher the heat. Density or state of matter is the distance between the particles the closer the particles the higher the density, the density of the particles determines the state of matter here they are from most dense to least dense; Solid, Liquid, Gas, and Plasma. the temperature (heat) of a substance can also determine the state of matter a substance is with higher heat at lower densities. PS the density/state list does not apply to water. PS Quantum state is not currently an official state yet, it would be the most dense and at the lowest temperature.
Explain what will happen to the mass volume and density of a liquid as the temperature increases?
If density = mass/volume, and your volume increases while mass remains the same... Then the denominator increases which would decrease the density
Does density of a substance generally decrease while the temperature increases?
No, the density of most substances typically decreases as the temperature increases. This is because the increase in temperature generally leads to an increase in the average kinetic energy of the substance's particles, causing them to move faster and occupy a larger volume. As a result, the density, which is defined as mass divided by volume, decreases. However, there are some exceptions, such as water, where the density increases between 0°C and 4°C due to changes in the structure of the water molecules.
What are most modern high temperature superconductors made of?
Resistance decreases with the decrease of temperature. Superconductors are made by lowering the temperature.
