Salt Concentration And Density Affects Floating Objects

Why do eggs only float in salt water and not freshwater? Eggs don’t float in freshwater because it is less dense that saltwater. In order to make an object that is more dense to float in an object that is less dense than it, you need to add a material such as salt in to the solution. When the salt water is makeing the egg float there is a process that is going on in the cup to

The objective of this experiment was to learn how water displacement affected density. Another objective was to identify the metals used in our experiments. We used a variety of different metals to test their correlation and to find out if it was negative or positive. I did not expect to learn much from this experiment as we had already discussed density in class and learned that water displacement is basically volume so as it increased the density would have decreased had we used metals of the same mass.

The purpose of this lab was to determine the effect of solutions with different salt concentrations on the mass of a potato slice. The data collected and analyzed in this experiment seems to support the hypothesis, which stated that the mass of a potato slice would decrease, as the salt concentration increased. This can be evidenced in Graph 1 where the downward slope of the data shows a negative correlation between salt concentration and average percent change.

Trial 1: ( Mass of water lost (g) / Mass of hydrated salt (g) ) · 100 =

The purpose of this experiment was to see if a penny could hold more drops of salt water or tap water. It was found that a penny could hold an average of 22.3 drops of tap water and only 20.8 drops of salt water. These results are consistent with the hypothesis: If the salt concentration of water impacts the amount of water a penny holds, then the penny will hold less drops with salt water. While dropping the water onto the penny, it was observed that the water formed into a dome-like shape on the penny. It looked like the individual drops of water turned into one large drop of water. This was observed for both the tap and salt water. This happened due to the cohesion and surface tension of water. Cohesion simply means that water molecules are attracted to each other and want to cling together. Surface tension is the special term that is applied to the cohesion of water molecules.

I will be doing this experiment to understand density of water compared to the volume of an object. D=m/v=mass/volume

Hypothesis: If the gummy bear is in cold water, then the bear will float on the water, because the density of the gummy bear will increase. When relating this experiment to a real life situation, ice in the arctic and Antarctica floats on the water, this is because the atoms in the water are more closely

To begin, did you know tin foil can float with pennies? Rapping tin foil like a boat and putting pennies in the boat. I can see how strong tin foil is and what brand is the best. Buoyancy the ability or tendency to float in water or air or some other fluid.

In Measuring and Understanding Density, several experiments were performed to find density of regularly shaped objects, irregularly shaped objects, liquids and gasses. An additional experiment was done to find the specific gravity of a sampling of liquids. The purpose of the experiment was to provide a better understanding of density and to be able to extrapolate unknowns based upon these calculations. The experiments yielded data in keeping with Kinetic-molecular theory in regards to the density of water versus its temperature. Key measurements and formulae were also used to determine densities of metal and plastic objects as well as irregularly shaped rocks. It is possible to find the density of an object (be it liquid, gas or

After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. What hypothesis can you generate about the effect of adding salt to water?

It has to do with the density of the objects compared with the density of the water surrounding them. If an object is less dense than the water around it, it will float. Because salt water is denser than freshwater, some things float more easily in the ocean—or extremely salty bodies of the water, such as the Dead Sea. You can make your own dense water by adding salt to tap water. In fact, if you add enough salt, you can make the water so dense that an egg will actually float in it!

The density of an object relative to the density of a liquid will determine whether the object floats or sinks in the liquid. The “Bozeman Video” says that when atoms are more compact in an object, the object is more dense. When an object is more dense than the liquid it's being put in, it sinks. If the object is less dense than the liquid it's being put in, it floats. In a lab we did, we put a regular Mountain Dew can that was full into a bucket of tap water and salt water.

In experiment two, “Hand-soaking,” I took the remainder of the salt water solution, which was approximately one cup and placed it into a cereal bowl. Into a second cereal bowl, I placed one cup of tap water solution. I placed one of my hands into the salt water solution and the other hand into the tap water solution. I let my hands soak in each of the solutions for 30 minutes and then observed the

My conclusion is that the egg with the most salt will float in the water. This is because salt water is denser than freshwater so some things float better than others. The Dead Sea has a lot of salt in it, that’s why things float in the dead sea. I did a project a lot like the Dead the Sea the dead sea has so much salt in the water that even a person can float in it. Saltwater is denser than freshwater this is like when you get in the pool with chlorine in it some things float because the water is dense. Fresh water is not dense at all. I got three clear cups and put exactly one and a half cups of water in each one. I got a spoon and put it in the first cup and it sunk to the bottom. The next cup I put a little salt in it and put an

This experiment was used to examine the hypothesis that: Osmosis is dependent on the concentrations of the substances involved.