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Density is mass per unit volume, so if you know an object's mass and the space it occupies, then you can calculate its density. If you had a scale, you could weigh the object to determine its mass. (Note that mass is not the same as weight, but the two are closely related insofar as we use weight to determine mass.) You could then carefully submerge it completely in water to determine how much water it displaced. That would tell you its volume. You would then divide the mass by the volume to get its density. But what if you don't have a scale? Can you still determine its density? I think you can. Place a known quantity of water in a graduated container. Carefully place the object in the container and note the change in the water level. Subtract the new water level form the old. That is the amount of water displaced by the object, which should be floating since it's less dense than the water. The weight of the water displaced by the object is equal to the buoyant force pushing up on the object. What does this tell us? Well, since the object floats, we know that the buoyant force is equal (but opposite) to the weight of the object. In other words, if we know the magnitude of the buoyant force, we know the object's weight (and therefore its mass)! Now, you can divide its mass by its volume, which you determined earlier by fully submerging it. Determine how much water is displaced by the floating object. Then carefully fully submerge the object and record how much water is displaced. If you divide the first number by the second, you will know its relative density compared to the density of water! If the floating object displaces 100 ml of water and the fully submerged object displaces 150 ml, then the relative density is 100/150 = 0.667. Since the density of water is 1.00 g/cm3, that means the density of the object is 0.667 g/cm3.
What else can I help you with?
How call you tell if a substance is more or less dense then water?
You can determine if a substance is more or less dense than water by comparing their densities. Water has a density of 1 g/cm3 at 4 degrees Celsius. If a substance has a density greater than 1 g/cm3, it is more dense than water. If it has a density less than 1 g/cm3, it is less dense than water.
Ice cubes float at the top of a glass of water What does this tell you about the density of ice compared to the density of water?
Ice is less dense than water because the molecules in ice are spaced out more, causing it to be less compact. This lower density allows ice to float on top of water, where it displaces an equivalent volume of water.
How can you demonstrate that water is denser than ice without weighing them?
Note that less dense objects will rise above more dense objects. I.E. Helium is denser then our atmosphere so balloons filled with it float. Simply put a cube of ice in a container of water and see if it floats. Also; you can't cant tell density by weight. A massive mountain is more dense then a twig but also a pebble is more dense then a massive log.
How can you tell if material is soluble?
If a substance is polar, it is soluble in water.
If your rock is hard to break than what does that tell you?
If a rock is hard to break, it likely indicates that it has high strength and durability. It could be made of a dense material or have a strong mineral composition. This characteristic suggests that it can withstand significant force or pressure without fracturing or crumbling easily.
A piece of ice floats on water. what does this tell you about the density of ice compared to the density of water?
It tells you that the ice is less dense than the water.
How call you tell if a substance is more or less dense then water?
You can determine if a substance is more or less dense than water by comparing their densities. Water has a density of 1 g/cm3 at 4 degrees Celsius. If a substance has a density greater than 1 g/cm3, it is more dense than water. If it has a density less than 1 g/cm3, it is less dense than water.
If an object floats in water what can you tell about its density?
You can tell that it is less dense than water which has a density of 1 cc
Does water become more or less dense after 3 level spoonfuls of salt were added How do you know?
denser, the buoyancy of objects is one way you can tell the water gets less dense.
Does a small object always have less mass than a larger object?
Not necessarily. The size of an object is not directly proportional to its mass. For example, a small object made of dense material could have more mass than a larger object made of less dense material.
How can you tell if an object will float in water from its gravity?
You can determine if an object will float in water by comparing its density to the density of water. If the object is less dense than water, it will float; if it is more dense, it will sink. The buoyant force acting on the object is determined by the density of the object and the density of the fluid it is submerged in.
Ice cubes float at the top of a glass of water What does this tell you about the density of ice compared to the density of water?
Ice is less dense than water because the molecules in ice are spaced out more, causing it to be less compact. This lower density allows ice to float on top of water, where it displaces an equivalent volume of water.
Can you tell me the weight of a gallon of body lotion the same as the weight of distill water?
No they are not the same weight. A gallon is a measurement of volume so their volumes would be the same, but the water weighs less than the lotion because it is less dense. Hope this helped.
How can you tell if an object has buoyancy?
An object has buoyancy if it can float in a fluid, such as water. This is because buoyancy is the upward force exerted by a fluid that opposes the weight of an immersed object. Objects that are less dense than the fluid they are in will float, while objects that are more dense will sink.
How can you demonstrate that water is denser than ice without weighing them?
Note that less dense objects will rise above more dense objects. I.E. Helium is denser then our atmosphere so balloons filled with it float. Simply put a cube of ice in a container of water and see if it floats. Also; you can't cant tell density by weight. A massive mountain is more dense then a twig but also a pebble is more dense then a massive log.
If something is more dense will it float in something less dense?
Yes.EDIT: Density is not the sole factor. While denser liquids proportionally outweigh less dense liquids thus earning themselves a lower position when in contact with with liquids of less density, chemical properties also come into play. Lets say we have a container of water, (1.0 g/L), and we add pure lemon juice, (approx 1.1 g/L). Instead of forming distinct layers, the lemon juice is diluted by the water. The molecules combine to form into a chemically inseparable solution due to solubility.Vegetable oil .91-.93 g/cm3 - Water 1.0 g/. Mix the two and the vegetable oil will float on top of the water, therefore, the LESS dense liquid will float on top, while the MORE dense liquid will sink to the bottom. Info taken from : What_is_the_density_of_1_tablespoon_of_vegetable_oil
How do you think the amount of a material affects its tendency to sink or float?
All by itself, the 'mass' of an object ... the amount of material in it ... doesn't tell you anything about whether it will sink or float. An AlkaSeltzer tablet and a large boulder both sink, but a duck and a large steel battleship both float. There must be more to it.
