The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in. An object will sink if it is more dense than the liquid it is placed in.
Is paper less dense than water?
Water also has a certain mass compared to its volume and a certain density. Comparing the density of an object to the density of water can tell you whether the object will sink or float. The rock is more dense than water so the rock sinks. The wood is less dense than water so the wood floats.
A piece of wood will float on water; but, most rocks are more dense than water, so they will sink. Helium is less dense than air, so helium balloons rise. Oil floats on vinegar because its density is less.
When fog is dense, you can't see through it. And if someone calls you dense, they think nothing can get into your thick skull. Dense comes from the Latin densus which means thick and cloudy. In general, the word means packed tight and gives the sense that something is difficult to get through.
Natural gas or Methane is also lighter than air, not because it contains helium, which most of it does not, but because it is just less dense than air. It can be used to fill balloons, but it suffers from the same flammability and explosion hazard as hydrogen.
The first chemical element with the lowest density is Hydrogen and the highest density is Osmium. Please note that the elements do not show their natural relation towards each other as in the Periodic system.
Generally, solids are denser than liquid, which is denser than gas of one particular substance. In liquid phase, molecules are freer and can move around, so it is less dense than solid, but denser than gas, in which the molecules move at high speed with large separation from one another.
1. low-density - having low relative density or specific gravity. light - of comparatively little physical weight or density; "a light load"; "magnesium is a light metal--having a specific gravity of 1.74 at 20 degrees C"
Lighter liquids (like water or vegetable oil) are less dense than heavier liquids (like honey or corn syrup) so they float on top of the heavier liquids. You should find that the weights of the liquids correspond to each different layer of liquid. For example, the honey will weigh more than the dish soap.
2010-04-25Low Density Residential Zoning Definition. "Low density residential zones" are locations intended for housing that include a lot of open space. These zones are meant for a small number of residential homes, and exclude large industries, apartment complexes, and other large structures.
When water freezes, water molecules form a crystalline structure maintained by hydrogen bonding. Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
into the cylinder or container lightest to heaviest – alcohol, vegetable oil, water, dish soap, corn syrup and honey. This time each liquid will sink into the other because the lighter liquids can't hold the heavier liquids.
Answer 5: These substances float (in water) because they are less dense than water. This means that a cubic meter of water has more mass (and thus weighs more on Earth) than a cubic meter of cork, wood, or ice. Think about swimming in a pool.
The water is the second denser liquid analyzed, being heavier than the olive-oil and ethyl alcohol, and lighter than the honey. Not surprisingly, the olive-oil floats in water, having a less density than it. The olive-oil doesn't float in alcohol and, therefore, is heavier than it.
Solids are usually much more dense than liquids and gases, but not always. Mercury, a metallic element that is a liquid at room temperature, is denser than many solids. Aerogel, a very unusual human-made solid, is about 500 times less dense than water.
Oil is more dense than alcohol, but less dense than water. The molecules that make up the oil are larger than those that that make up water, so they cannot pack as tightly together as the water molecules can. They take up more space per unit area and are less dense.
Because less dense substances float in substances of greater density, the alcohol floats on the oil. 6. Water is more dense than alcohol or oil because its molecules can pack closely together, which means that it has more mass in the same volume than either alcohol or oil.
Density describes how compact or concentrated something is. For example, suppose you have two boxes, one large and one small. However, they both weigh the same. That means the small box has a higher density than the large box. Density also tells how concentrated or crowded something is.
They should conclude that the alcohol floats because it is less dense than the oil. Why does the water sink in the oil? Water sinks because it is more dense than oil. Explain that, just like solids, liquids are made from atoms and molecules, which have a certain mass and size.
Cream or milk fat is lighter in density than water and floats on the surface of un-homogenized milk. When you skim off the surface, some of the fat, the denser portions remains and the milk is denser. This explains why skim milk is denser.
Water has a density of about one gram per cubic centimeter (depending a little on temperature and pressure). Household vinegar consists almost entirely of water, but with some acetic acid molecules dissolved in it. In general, dissolving stuff in water makes it more dense, making vinegar the densest of the three.