Conservation Of Mass Lab Report

If the amount of baking soda used in this experiment increases (0.2 g, 0.4 g, 0.6 g, 0.8 g, or 1 g), then the volume (mL) of the carbon dioxide released from the decomposition will also increase. In any chemical reaction, the atoms of the reactants are rearranged to form the product. Thus, as particles cannot be created or destroyed, the mass of the carbon dioxide released cannot increase or decrease unless the mass of the baking soda is changed.

The law of conservation of mass states that matter can be changed from one form into another, mixtures can be separated or made, and or substances can be decomposed, but the total amount of mass remains constant. Taking this law from a different view we can state that the total mass of the universe remains constant. Whenever matter undergoes change the total mass of the products will be the same as the total mass of the reactants. For example, in this experiment sodium hydroxide and copper sulfate, the reactants have a total mass of 21.4 grams. The total mass of the products, copper hydroxide and sodium sulfate, was 21.13 grams. The 0.27 grams was a result of the solution staying on the thermometer that was used to measure the temperature. This law was formulated in the end of the 18th Century. It marked the beginning of modern history.

Purpose: Weighing objects. Figuring out the density with an object by calculated volume and Archimedes’ Principle.

5. Calculate the mass of the water by subtracting “Mass A” from “Mass B.” Record the mass of the water in Data Table 4.

Copied the observations table in our notebook. Then recorded the mass of the beaker using the balance and wrote down the measured mass in the observation

Repeat the above step by adding 3 pennies at a time (zeroing the scale at each interval) until you have recorded the mass of 15 pennies.

I learned that mass and volume work together to find the

When the amount of baking soda added is changed, the amount of gas produced will change because baking soda creates gas. Meaning when the three substances are mixed, there will be more gas.

Repeat steps 1-8 replacing the chemical substances that were mixed together in the first baggie with one teaspoon of calcium chloride, ½ a teaspoon of sodium bicarbonate, and five mL of tap water (obtained with the 100 mL

In this experiment, our goal was to determine what the formula of an unknown substance was (the reactant). By weighing the unknown

The purpose of this experiment is to conduct what happens to gummy bears when we put them into different liquids. When we were done we gathered data and saw that the gummy bears ended up with different textures and sizes. There were only some minor differences. For water after a day, the length changed, the width, height, and mass. For salt water only the mass changed, before it was 2.6 and after it was 1.5 grams. The next liquid is sugar water, and for that liquid all the of the data changed. The length was 3 cm before, after it was 3.5 cm. The width of the gummy bear was 3 cm before, after it was 1 cm, and after it was 1.5 The height was 2 cm, and changed to 1 cm. Lastly is the mass, it was 2.6 and the after it changed to 5.1. The

First, the 1 M HCI would need to be diluted. Use 3 (.75) parts water and 1 part (.25) 1 M HCI.

Weigh the mass of the beaker including the 300mls of water in it on a scale to record the weight, taking away the weight of

The purpose of this lab was to test the law of conservation of mass by comparing the total mass of the reactants in a chemical reaction with the total mass of the product.

The analyses of mixture were to distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these techniques, we examined our solutions such as SiO2 (sand), NH4Cl (ammonium chloride), and NaCl (sodium chloride) and mixed H2O (water) with each solution after being heated. After examining our solutions, we made calculations by finding the percent mass of each solution once the experiment was completed. In our findings, we were able to determine the mass of the determined and the percent recovery of matter. The outcome of the experiment was that we made the correct