How can 2 objects with the same mass have different density?
Answer:Because mass and volume are independent, two objects with the same volume can have different masses. Therefore, the objects can have different densities. However, if two objects have the same mass and volume, they will have the same density.
What happens if two objects have the same mass but different volume?
If the two objects have the same volume but different masses, the one with has a greater mass will have a higher density. For example each liter of gasoline and water don’t have the same masses.
What is true about two objects that have the same mass?
Two objects with the same mass will always have the same momentum.
Will an object with a density of 1 float?
In the case of water, an object with a density less than 1 g/cm3 will float. The closer its density is to 1 g/cm3, the more of it will sit below the water level. This is equal to the force of gravity acting on a mass of water equal to the amount of water the object displaces when fully immersed.
At what density does an object float?
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….
| Object | Density (g/cm3) | Sink or Float |
|---|---|---|
| Orange | 0.84 | Float |
| Orange without peel | 1.16 | Sink |
What do all sinking objects have in common?
What do sinking objects have in common? All of the sinking objects have a density more than 1.0 g/cm^3. Does mass or volume alone determine whether an object will sink or float? No, you need both mass and volume (mass divided by volume) to find density (needed to figure out if the object will sink or float).
Will a cotton ball sink or float?
Cotton balls only float while is air trapped between the fibres. When all the air has been replaced by water, the cotton ball sinks. Cotton balls sink faster in hot or soapy water because both wet the cotton fibres and replace the air trapped between them much faster than pure cold water.
What will happen when you squeezed the cotton balls?
Answer: When you drop a cotton ball into water, the water quickly creeps into all those tiny spaces between and inside the hollow cotton fibres. Once all the air has been replaced by water, a single cotton ball makes almost no difference to the water level in a glass.
Why do marshmallows float?
It floats if it is less dense than water. When you drop a marshmallow in water, it floats like a balloon. A marshmallow is full of air bubbles, which puff it out. The sugar in the marshmallow gets spread out over a large area, making the marshmallow less dense than water.
Is it possible to sink a marshmallow?
Why it works: Marshmallows are light and fluffy because they are full of air. Air is less dense than water, so the marshmallow floats. When you squish the marshmallow, you squeeze out the air, making it denser than the water. Now the flat marshmallow will sink.
How do you get marshmallows to sink?
What to do:
- Drop a marshmallow into the water.
- Sprinkle cornstarch over your flat surface.
- Put the marshmallow on the cornstarch and squash it.
- Put it in water to see if it floats.
- The more you squash the marshmallow, the lower it will float in the water.
- If your marshmallow didn’t sink, grab another one and try again!