I do know about the density of water. The density of water is 1.0 grams/ millimeter. To find the density of an object, divide its mass by volume. If you have any further questions, ask me.
I do not know
You know that the density of pure water is 1g/cm3. If you also know the volume of the water, you can multiply the two and get the mass.
If it sinks in water then it has a higher density than water. If it floats on water surface then its density is less than water.
If it floats in water, it has a density less than water. Density of water is 1.0 g/mL
You do not. A metal ship, with density well above that of water, will float.
If an object placed in water sinks - then it has a density greater than water.
by its density.
We both know it floats
The density is the ratio between mass and volume.
Compare the density of the object in question to the density of water. If its density is less than water, it will float. For example, oak floats because its density is 0.7 g/cm³ and the density of water is 1 g/cm.If the density of an object is greater than water, it will sink.
It's actually pretty easy. If the density of the substance is higher than the density of water, the object will sink. If the density of the substance is lower than the density of water, the object will float. Be aware though that various substances may have dissolved into the water, thus changing its density. For example, seawater has a different density than fresh water.
Density is a measure of mass to volume. The density of water at 4C is 1 g/ml. So to determine density of a substance you need to know the mass and the volume. Any density higher than 1 will sink in water and any density lower than 1 will float.