How can volume be changed

In this experiment the:. Remember - these variables are controlled or kept the same because to make it a fair test, only 1 variable can be changed, which in this case is the volume of the object.

As the volume of the material increases, the mass will also increase. Justification for the prediction. The greater the volume of the object the greater the number of atoms present. This will result in the object having greater mass. Boundless vets and curates high-quality, openly licensed content from around the Internet.

This particular resource used the following sources:. Skip to main content. Introduction to Chemistry. Search for:. Volume and Density. Learning Objective Describe the relationship between density and volume.

Key Points The volume of a substance is related to the quantity of the substance present at a defined temperature and pressure. The volume of a substance can be measured in volumetric glassware, such as the volumetric flask and the graduated cylinder. Density indicates how much of a substance occupies a specific volume at a defined temperature and pressure.

The density of a substance can be used to define the substance. For gases, the volume is always equal to the container that the gas is inside. This means that, for gases, you can relate the volume to temperature, pressure and density using the ideal gas law.

Three more laws describe the relationships among volume, pressure and temperature as they change when all other quantities are held constant. In each law, the left-hand variables describe volume, pressure and temperature at an initial point in time while the right-hand variables describe them at another later time point.

These three laws follow the same principles of the ideal gas law, but describe the changes in contexts of either temperature, pressure, or volume held constant.

Though people generally use mass to refer to how much of a substance is present or how heavy a substance is, the various ways people refer to masses of different scientific phenomena means that mass needs a more unified definition that encompasses all of its uses.

Scientists typically talk about subatomic particles, such as electrons, bosons or photons, as having a very small amount of mass. But the masses of these particles are actually just energy. While the mass of protons and neutrons are stored in gluons the material that keeps protons and neutrons together , the mass of an electron is much more negligible given that electrons are about 2, times lighter than protons and neutrons.

Gluons account for the strong nuclear force, one of the four fundamental forces of the universe alongside electromagnetic force, gravitational force and the weak nuclear force, in keeping neutrons and protons bound together.

Though the size of the entire universe isn't exactly known, the observable universe, the matter in the universe that scientists have studied, has a mass of about 2 x 10 55 g, about 25 billion galaxies the size of the Milky Way. This spans 14 billion light years including dark matter, matter that scientists aren't completely sure of what it's made of and luminous matter, what accounts for stars and galaxies.

Scientists come up with these estimates by observing changes in the Cosmic Microwave Background artifacts of electromagnetic radiation from primitive stages of the universe , superclusters clusters of galaxies and Big Bang nucleosynthesis production of non-hydrogen nuclei during the early stages of the universe.

Well, that's what they want us to figure out, what is the volume of the balloon just before it bursts? So I'll put a little question mark there.

And then, last but not least, what is T one? Well, they tell us the starting temperature is at 23 degrees Celsius, but you have to think on more of an absolute scale, and deal with temperatures in terms of Kelvin, so to convert 23 degrees Celsius into Kelvin, you have to add , so this is going to be Kelvin, and then what is T two?

Well, T two is negative 44 degrees Celsius, if we add to that, let's see, that's going to be, if we subtract, it's going to be in my head, Kelvin. And so we have everything we need in order to solve for V two, in fact, we can solve for V two before we even put in these numbers, if we multiply both sides of this equation times T two over P two, and the reason why I'm multiplying it times this is so that this cancels with this, this cancels with that, so I have just V two on the right-hand side.

Of course, I have to do that on both sides. So we just have to calculate this right now, let me give myself a little bit more real estate with which to do it, and so we could write that V two is equal to T two, which is Kelvin, times P one, which is Torr, times V one, which is 1.

So this is going to be equal to times , times 1.