The atom Regulatory Commission's science 101: What is Matter?
You are watching: Quantity of matter in an object
Let's say that we have a box v the adhering to dimensions: length = 3 meter ("m"), height = 4m, and width = 5m. Based on those dimensions, our crate would have a volume the 60m3 (3m x 4m x 5m = 60m3). That is, again, a measure up (in cubic meters) of exactly how much three-dimensional an are our crate takes up.
If, on the various other hand, our object was a liquid, we could use a i graduated cylinder (a clinical measuring cup) to measure up the volume of our object. This measure would certainly be report in liters. Again, a liter is just a measure of just how much space a fluid takes up. For example, you deserve to purchase soda in 2-liter bottles.
Since we've been talk a little about measurements, it can make feeling at this allude to distinguish in between quantity and also units. Reasoning again about our example, the quantity we space trying to measure is volume. The unit we usage to report this measure up is in liters or cubic meters.
Weight, top top the other hand, is a measure of how much gravitational force is exerted on one object. When the weight of things is proportional come its massive (the much more mass of an item the more it will certainly weigh), gravity varies follow by whereby you room in the cosmos or even where you space on Earth—you actually sweet more, because there is a greater gravitational force, on the poles 보다 you would at the equator. So, while an object will have actually a specific weight here on Earth, it will certainly not have the exact same weight on the moon. That would, however, have the same mass both places.
Now the we can determine if other is issue (if it has actually volume and mass), we can use one more measurement, density, to identify what kind of matter a problem is. Thickness is the ratio of just how much mass is in an object compared come the volume of that object. Density is calculation by dividing an object's massive by that volume.
Think back to ours box through a volume that 60m3. Let's say that our box has a mass of 240 grams (g). If that were the case, the density of our box would be 4 g/m3 (240g / 60m3). Thickness is nothing more than a means of stating how much matter fits in ~ a details volume. Utilizing the 2 pieces of candy, while both have actually the exact same size (or volume), the solid one has an ext mass when compared to the hole one and, together such, the solid liquid is an ext dense (more matter in a particular volume) than the hole candy.
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Because the density of a particular substance (something through a characterized composition, such together pure copper), is the same for all piece of that substance, regardless of size, thickness is often helpful in determining the identity of a specific object. Once we've calculate the thickness of one object, we have the right to compare that value to the well-known densities because that substances to identify what substance we think the object is.