Yes any salt can make things float
You can't make things float, things float by it's self's it's density is lower than 1 it can float, if it's density is greater than 1 it can't float.
round
make it into shape of a boat
To make a float you will need a shoe box and a knife. You will need to cut the box in the shape of Nevada.
There are many things that make you float such as a bin or large container turned upside down. The best things that make you float are things with air trapped inside them. These things may be large empty water containers from a water dispencer or lots of bubble wrap or even a coat that has air in the lining.
dawdadawdawd yes
Many things can float in water. An object will float based on 2 main factors. They are density and shape. If an object is too dense, it will sink. But why would shape matter? The shape of the object affects how the water is displaced. If the weight of the water displaced is more than the weight of the object that is touching the water, the object will float. So the shape affects how much water is displaced therefore determines if an object will float.
salt makes the water denser, so things that are now less dense than the salt water will float
It makes the water more dense.
put it in something with more density.
Yes