Does temperature effect density

Answer 1

Temperature Effects Density, and Hydrogen Bonds in water, glucose, and alcohol affecting density.

when the temperature is warmer/hotter the molecules in the object are more spread out, less dense.

when the tempreature is cooler/colder the molecules pack together and become more dense, like how ice is cold and solid.

eg. water is spread out, so are the molecules.

water is exposed to cold temperature and turns into ice; hard and dense. molecules packed tightly together. think that they are cold and are huddling together to stay warm.

we can stick our hand in water because we are more dense than water.

but ice is more dense than us, which is why we can't stick our hand through ice. ( that would be so cool...)

the reason water puddles, is because water (H2O) molecules stick together, literally.

alchohol on the other hand, doesn't have a chemical hydrogen bond like water does; hense, alcohol molecules do not stick together.

Glucose, on the other hand, has a very strong hydrogen bond chemical, which is why it's so thick and ALWAYS sticky and stuff.

hope this helps, yours.

i think i just actually helped myself out. i didn't even realize i knew this stuff until i typed it. guess i couldn't put it into words. heh sweet. don't worry, it's def all accurate though.

Answer 2

ice is less dense than water. water is more dense (compact molecules) than ice. when heat is applied to ice, it becomes more dense, as it turns to water. when cool temperatures are applied to water, the molecules spread out, making it less dense. when you put ice in a drink, does it sink to the bottom pf the cup, or float? float; because the molecules are less dense. same with a boat; even though the mass of the actual boat is heavy on LAND, the air inside the boat is less dense than the WATER BELOW, therefore causing it to float. when there is not enough air in the boat, guess what: it sinks. ok, helium balloons: the mass of the actual balloon has weight. but when it is filled with helium, since air is more dense than helium, it "pushes" the helium balloon UPWARDS. including the small weight of the rubber balloon. when there is no more air (with those escapee balloons) the balloon will pop from pressure and the plain balloon carcass will have no "helium force" pushing it upwards, and will either fall to the ground or get caught on an airplane on the way down. In general it reduces the density. There are exceptions at various temperature with certain substances, as with the case above with water and ice. However even with these if you add more heat the density will fall. if a liqude ishot than the atoms move apart witchmakes it less dense

Answer 3

no it does not matter how hot or cold it is

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The density is strongly dependent on temperature, especially for gases !

A heated gas has a lower density than a cold gas.

Answer 4

it is effected by temperature as density is the mass per volume unit of a substance so when the temperature increases or decreases the volume changes as for example if we have a jar of water the water in the jar will become solid if we decrease the temperature and so the volume changes this is how density is affected by temperature

Answer 5

Whenever something becomes hotter, the atoms become more sparesly separated (expand), therefore giving it a lighter density. Whenever something becomes colder, it will become more compact, therefore becoming more dense (higher density).

Yes.

Increased temperature results in decreased density (but larger volume)

A classical experiment can be done with an ordinary ballon.

Blow it up and put it in the freezer. You will see that it becomes a lot smaller. Density increases as volume becomes smaller.

Answer 6

As temperature rises so does volume. Density = mass / volume Hence, for a fixed mass of substance the density will reduce as volume increases. This is because density is inversely proportional to volume.

Answer 7

Pressure and density are directly proportional (all other factors constant) for a gas. If we compress a gas, it gets more dense.

high temperature is of lower density, while lower temperature is of higher density

Answer 8

Density = mass divided by volume.

Temp does not effect mass.

But most substances increase in volume with increased temp.

Thus: higher temp equals lower density.

Answer 9

Density increases with a decrease in temperature and decreases with an increase in temperature.