In this experiment we took measurements of two gummy bears before subjecting them to any scientific changes. The mass of the gummy bear in the bag before the experiment was 1,980 grams and the mass of the gummy bear in water before the experiment was 2,484 grams. After we took the measurements of the gummy bears we placed one in a ziplock bag and closed it with as little air in it as possible left in it. The other gummy bear was placed in water for 24 hours. After the 24 hours, the gummy bear that was in the water had absorbed so much water it was over twice the size. It was so much bigger because the gummy bear has a semi-permeable membrane so osmosis was able to occur. Osmosis is the movement of molecules from high to low areas of concentration
0.53×2×180.192 g = 191gms 5.
The second gummy bear was 3.5 centimeters in length and 1 centimeter in width. Both gummy bears were smaller than the last experiment. For this lab, the effect of osmosis on gummy bears was examined.
If weighed Candium will have a light average mass, and a low weight when weighed separately.
V=D*M V=7.042*5.0 V=35.21 g/mL 3. Based on previous experiences the following substances in order from the lowest density to highest are, styrofoam peanuts, pine 2” X 4” board, water, and finally, lead pipe. Styrofoam and pine have a lower density than water because they float. Furthermore, pine has a greater mass than styrofoam therefore, a less density than pine.
If a gummy bear is soaked in water, then it will increase greatly in its measures.
• The length of your gummy bear should be measured from the top of its head to the bottom of its feet to the nearest tenth of a centimeter.
If the gum is chewed 625 times then, the chewed mass of the sugar can help calculate the percentage of sugar in the gum.
An experimental value for Calories per gram in each snack food could be determined after burning the piece of food under a soda can full of water and recording the mass
Introduction: Accuracy and precision were the major aspects of the lab. Accuracy is how close the average of the measured values are to the actual value. Precision is the closeness of repeated measurements. In the lab, the aim was to get as close as possible with both accuracy and precision when determining the mass and volume of the spheres. The mass was determined by weighing the spheres on the Analytical Scale and Triple Beam Balance Scale. The volume is determined by measuring with a ruler and by water displacement. The standard
Density = mass/volume mass = density x volume = 0.815 (g/ml) x 1 (ml) =0.815 g
it's mass, but being divided into lots of smaller blobs, which makes it easier for other blobs to eat
In the fourth stage of this experiment, the density of a gas was determined. A 250ml flask was weighed with an empty rubber balloon and the mass was recorded.
Osmosis is a natural occurrence constantly happening within the cells of all living things. For osmosis to occur, water molecules must move across a semipermeable membrane from an area of low concentration to an are of high concentration. In order to understand osmosis, people must understand the different types of concentrations that can be present within solution. One of them is an Isotonic solution where the concentration of dissolved particles is equal to that of a cell’s. Another is a hypertonic solution where there is a higher concentration of dissolved particles then inside the cell. And lastly there is a hypotonic solution where there are less dissolved particles than inside the cell. As dissolved particles move to a region of lower concentration, water moves the opposite direction as a result of there being less water in the highly concentrated region. In this experiment, gummy bears were placed in salt water, sugar water, and tap water to find the measure of osmosis between the solution and gummy bear.
The purpose of this lab was to determine the unknown mass of a block of wood. The goal was well accomplished successfully. The actual mass of the wood was 78.71g measured by balance and the mass from the calculation was 76.3g. The percent error was 3.06%. It was very close. The hypothesis was correct. As can be seen in the analysis the mass of block of wood has less mass than the known mass which was 200g. That supported the hypothesis.
After that, it is crucial to convert the mass to volume. The water density at a temperature will aid this process. The compliance of the Volume Occupied by 1.000g of Water Weigh in Air table is deemed necessary throughout the comparison.