3) Place the penny tails up 4) Place the pipette over the letter “c” in “one cent” 5) Place the pipette 5 inches above the penny 6) Begin to slowly squeeze the solution out of the pipette, over the letter “c” while counting the numbers of drops until the solution spills out from the surface of the penny. 7) Record data of how many drops of green mysterious solution could be held and the observations made. 8) When the solution spills out of the penny, dry off the penny. 9) Repeat steps 2-9 but over the Lincoln icon mark in the very center of the penny (be sure to use the same exact penny) The controlled conditions for this experiment included; a clean table surface, same penny, same person, and same pipette. The manipulated variable is where the person holding the pipette dropped the green mysterious solution on the “c” of “one cent” on the back or the very middle of the penny.
The M&Ms were selected from a larger bag of M&Ms with many colors. There were 5 M&Ms that were selected from the bottom of the bag and 5 that were selected from the top of the bag in order to increase the chance of a completely random sample. The M&Ms were then measured to the nearest one hundredth of a gram on an electric scale. We hypothesized that when the masses of ten M&Ms of the same color were collected, that they would not have the same mass. Since the amount of chocolate covering each peanut isn’t measured out there must be a difference in the mass of the M&Ms.
How does the amount of sugar affect the time taken for sugar to dissolve in water? We were asked to carry out an experiment on whether the amount of sugar to dissolve would affect the time taken for it to dissolve in water. I tried to investigate whether the different amounts of sugar affected the time it took for sugar to dissolve, by keeping the temperature constant at 60ºC and the amount of water at 100 ml, and whether 3 tsp of sugar dissolved the same, quicker or slower in water than 1 tsp of sugar by using scientific methods. Prediction I predict that in my experiment when I increase the amount of teaspoons of sugar, the time needed for the sugar to dissolve will increase. I believe this will happen because the more sugar molecules there are at the same time, the longer it will take for them to find space inbetween the water molecules.
Period 8 Lab Report Density of Liquids Statement of the Problem: • Which liquid has the greatest density and which has the lowest density? Hypothesis: • My hypothesis was that the milk will have the greatest density and the tap water would have the least density. Materials and Safety: • 100 mL graduated cylinder • Triple beam balance • Milk • Tap Water • Pepsi • Diet Pepsi • Salt Water • Apple Juice • Make sure the liquids does not spill and keep graduated cylinder from the edge • Do not drink nor eat anything Procedure: 1. Record the mass of the cylinder. This is your magic number.
Herman and Mack (1975) found that non dieters ate less of the ice cream in the two milkshake preload condition than in the one or zero preload conditions. However dieters ate significally more ice cream in the one
Milk Lab Purpose: To observe how different fat contents of milk react to food coloring and dish soap. Hypothesis: If we increase the fat content of the milk then food coloring won’t spread as fast. Materials Red food coloring | 11 ml fat free milk | Blue food coloring | 11 ml 2% milk | Green food coloring | 11 ml whole milk | Petri dish | Dish detergent | 25 ml graduated cylinder | Colored Pencils | Procedure: 1. Measure 11ml of desired milk in graduated cylinder. 2.
She believes the milk industry is one of capitalism’s greatest deceptions (De Vivo). Surprisingly, studies show that milk is not good for you and has little nutritional value. Milk can cause constipation, stomach aches, food rejection, reflux, and allergies. The milk industry’s biggest statement is that it contains a good source of calcium. According to Marcela and an article from Cindy Cleary and Jo DelAmor, calcium in milk cannot be absorbed in our bodies because there is not a sufficient amount of magnesium.
HYPOTHESIS: I believe that no matter the amount of jelly on the bread, landing jelly-side down will not always be the case. MATERIALS: 1 jar of jelly 2 pieces of newspaper 1 1oz measuring cup 1 yard stick 9 pieces of white sandwich bread PROCEDURE: 1. Measure the jelly out into the cup so it is filled completely. You will do this three times as you will need to cover one side of 3 pieces of 2. Measure the jelly out into the cup only half way so you can cover only half of the surface of three more pieces of bread.
FOUR UNKNOWN HOUSEHOLD OBJECTS Question: What are the four unknown household objects presented to us? Hypothesis: Substance 1 consists of water jelly crystals, if it turns into a jelly-like substance when mixed with water. Substance 2 is sugar, if it caramelizes when heated. Substance 3 is salt, if it lowers the melting point, and therefore melts ice faster than the other objects. Substance 4 is baking soda, if it fizzes when it reacts with baking soda.
For “the cell” of 20% sugar solution in the 1% sugar solution I predict that the weight will stay the same as well just because it is in a less concentrated solution as “the cell”. Conclusion: The results were very surprising, it was not what I expected at all. My prediction of the cell of 1% sugar solution in the 1% sugar solution was correct. The cell weighed the same after the twenty minutes. This cell was placed in a isotonicity enviroment.