Most don't, but a few do. Na and K come immediately to mind ie the Alkali Metals.
Two elements that can float on water are lithium and potassium. These elements have a lower density than water, which allows them to float on its surface.
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.
No, the density of antimony is more than six times greater than the density of water so it will sink in water.
No, the density of a rubber stopper is less than the density of water. Rubber has a lower density compared to water, so a rubber stopper would float on water.
All the elements with the atomic number under 92 has atomic weights smaller than uranium.
Because they have a smaller density than water
I'm pretty sure Saturn would float in water.
The density of any substance remains the sameirrespective of its volume.
Things that float have a smaller density than water and things that sink have a larger density than water. Because a stone is heavy for its size it sinks but although a ship is heavier its mass is spread out over a larger area so its density is smaller and therefore it floats.
No, the sample of mercury will sink in water because the density of mercury (13.6 g/cm3) is higher than the density of water (1 g/cm3), indicating that mercury is denser than water and will not float.
Lead sinks in water due to its high density, which is greater than the density of water. This causes it to displace a smaller volume of water compared to its own volume, resulting in it sinking.
Increasing the air cell (in time, for unfresh eggs) of the eggs lead to floating in water, because the density of the egg become smaller than the density of water.
If the density of a substance is greater than the density of water, it will sink in water. If the density of a substance is less than the density of water, it will float on water.
lead has much higher density
It is said that if you could find an ocean on Earth large enough to accommodate it, Saturn would float. That is, Saturn's average density is less than the density of water. Turns out it's the only planet with an average density less than 1.000, that is, less than the density of water.
Two elements that can float on water are lithium and potassium. These elements have a lower density than water, which allows them to float on its surface.
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.