Mass Lab
Lab Report for Chemical Changes and Conservation of Mass Lab
Previous to the reaction, the magnesium appeared to be a solid, white, black, and grey substance with many small dark particles within the substance. The hydrochloric acid was a clear liquid that looked like water It weighed 42.2 grams in total. During the reaction, the two substances produced bubbles, creating smoke and became warm with a smell that is irritating to the human nose. After the reaction, it appeared to be a clear, bubbly liquid with white spots. It weighed 42.2 grams in total after the reaction. The creation of bubbles, the different smell, and the increase in temperature told me that a chemical reaction occurred within the substance.
Experiment one did not violate …show more content…
the conservation of mass as a principle. This is because the mass remained at 42.2 grams before and after the reaction. As the theory of conservation of mass clearly states, mass cannot be created nor can it be destroyed. Therefore, the combination of magnesium (Mg) and hydrochloric acid (2 HCl) to create magnesium chlorine (MgCl₂) and hydrogen (H₂) did not violate the conservation of mass.
Previous to the reaction, the paper appeared to be white, flat, solid, and malleable. It weighed 27.5 grams in total. During the reaction, the paper turned grey before turning black and being consumed by the flame. After parts had been burned, they were also grey and they were very brittle and dissolved when they were touched. After the reaction, the paper appeared to be grey, brittle, solid, and extremely breakable. It weighed 27.1 grams in total after the reaction. The change in colour, the smoky smell, and the smoke produced told me that a chemical reaction occurred within the substance.
Experiment two did not violate the conservation of mass as a principle.
This is because after the reaction, the paper only weighed 27.1 grams and it had previously weighed 27.5 grams. This means that the paper lost 0.4 grams due to the reaction. However, this mass could have been released into the environment in the form of carbon dioxide gas. This could be seen in the equation provided and the smoke that the paper release when it burned. The equation showed that carbon dioxide was released after the reaction. Therefore, the combination of paper and fire to create carbon dioxide and water did not violate the conservation of …show more content…
mass.
Previous to the reaction, the iron appeared to be light silver/grey, stringy, malleable, and lightweight weight. It weighed 3.9 grams in total. During the reaction, the blue and yellow flame being produced turned bright orange and sparks flew from the steel wool. The steel wool turned a dark grey with a dark navy blue hue. After the reaction, the steel wool appeared to be dark grey with a slight navy hue. It weighed 4.0 grams in total after the reaction. The change in colour told me that a chemical reaction occurred within the substance.
Experiment three did not violate the conservation of mass as a principle. The mass increased by 0.1 grams from 3.9 grams to 4.0 grams. However, this is because the oxygen released from the bunsen burner had a chemical reaction with the iron in the steel wool, and they fused together. This is shown in the equation when iron and oxygen turn into iron oxide after the reaction. Therefore, the combination of solid iron and oxygen gas in the form of fire to create iron oxide did not violate the conservation of mass.
Previous to the reaction, the lead nitrate appeared to be clear, liquid, yet slightly foggier than the sodium iodide. The sodium iodide appeared to be clear, liquid, and like water. It weighed 59.5 grams in total. During the reaction, the two liquids combined creatin a yellow liquid immediately. However, the mixture was not completely homogenous as there were yellow particles that settled at the bottom after a short amount of time. After the reaction, the substance appeared to be a yellow liquid with many yellow particles inside of it. It weighed 59.5 grams in total after the reaction. The change in colour to bright yellow told me that a chemical reaction occurred within the substance.
Experiment four did not violate the conservation of mass as a principle.
This is because the mass remained at 59.5 grams before and after the reaction. The theory of conservation of mass states that mass cannot be created or destroyed, and this experiment supported that theory. Therefore, the combination of liquid lead nitrate and sodium iodide to create solid lead iodide and liquid sodium nitrate did not violate the conservation of mass. Experiment one is in support of the conservation of energy pertaining to chemicals because heat energy was released when magnesium (Mg) and hydrochloric acid (2 HCl) to create magnesium chlorine (MgCl₂) and hydrogen (H₂). this reaction was exothermic because heat was produced in the process and released into the surroundings. The energy did not disappear in the reaction as it was clearly released from the substance. Therefore, the law of conservation of energy was in effect during the entirety of this
experiment.
Previous to the reaction, the magnesium appeared to be a solid, white, black, and grey substance with many small dark particles within the substance. The hydrochloric acid was a clear liquid that looked like water It weighed 42.2 grams in total. During the reaction, the two substances produced bubbles, creating smoke and became warm with a smell that is irritating to the human nose. After the reaction, it appeared to be a clear, bubbly liquid with white spots. It weighed 42.2 grams in total after the reaction. The creation of bubbles, the different smell, and the increase in temperature told me that a chemical reaction occurred within the substance.
Experiment one did not violate …show more content…
the conservation of mass as a principle. This is because the mass remained at 42.2 grams before and after the reaction. As the theory of conservation of mass clearly states, mass cannot be created nor can it be destroyed. Therefore, the combination of magnesium (Mg) and hydrochloric acid (2 HCl) to create magnesium chlorine (MgCl₂) and hydrogen (H₂) did not violate the conservation of mass.
Previous to the reaction, the paper appeared to be white, flat, solid, and malleable. It weighed 27.5 grams in total. During the reaction, the paper turned grey before turning black and being consumed by the flame. After parts had been burned, they were also grey and they were very brittle and dissolved when they were touched. After the reaction, the paper appeared to be grey, brittle, solid, and extremely breakable. It weighed 27.1 grams in total after the reaction. The change in colour, the smoky smell, and the smoke produced told me that a chemical reaction occurred within the substance.
Experiment two did not violate the conservation of mass as a principle.
This is because after the reaction, the paper only weighed 27.1 grams and it had previously weighed 27.5 grams. This means that the paper lost 0.4 grams due to the reaction. However, this mass could have been released into the environment in the form of carbon dioxide gas. This could be seen in the equation provided and the smoke that the paper release when it burned. The equation showed that carbon dioxide was released after the reaction. Therefore, the combination of paper and fire to create carbon dioxide and water did not violate the conservation of …show more content…
mass.
Previous to the reaction, the iron appeared to be light silver/grey, stringy, malleable, and lightweight weight. It weighed 3.9 grams in total. During the reaction, the blue and yellow flame being produced turned bright orange and sparks flew from the steel wool. The steel wool turned a dark grey with a dark navy blue hue. After the reaction, the steel wool appeared to be dark grey with a slight navy hue. It weighed 4.0 grams in total after the reaction. The change in colour told me that a chemical reaction occurred within the substance.
Experiment three did not violate the conservation of mass as a principle. The mass increased by 0.1 grams from 3.9 grams to 4.0 grams. However, this is because the oxygen released from the bunsen burner had a chemical reaction with the iron in the steel wool, and they fused together. This is shown in the equation when iron and oxygen turn into iron oxide after the reaction. Therefore, the combination of solid iron and oxygen gas in the form of fire to create iron oxide did not violate the conservation of mass.
Previous to the reaction, the lead nitrate appeared to be clear, liquid, yet slightly foggier than the sodium iodide. The sodium iodide appeared to be clear, liquid, and like water. It weighed 59.5 grams in total. During the reaction, the two liquids combined creatin a yellow liquid immediately. However, the mixture was not completely homogenous as there were yellow particles that settled at the bottom after a short amount of time. After the reaction, the substance appeared to be a yellow liquid with many yellow particles inside of it. It weighed 59.5 grams in total after the reaction. The change in colour to bright yellow told me that a chemical reaction occurred within the substance.
Experiment four did not violate the conservation of mass as a principle.
This is because the mass remained at 59.5 grams before and after the reaction. The theory of conservation of mass states that mass cannot be created or destroyed, and this experiment supported that theory. Therefore, the combination of liquid lead nitrate and sodium iodide to create solid lead iodide and liquid sodium nitrate did not violate the conservation of mass. Experiment one is in support of the conservation of energy pertaining to chemicals because heat energy was released when magnesium (Mg) and hydrochloric acid (2 HCl) to create magnesium chlorine (MgCl₂) and hydrogen (H₂). this reaction was exothermic because heat was produced in the process and released into the surroundings. The energy did not disappear in the reaction as it was clearly released from the substance. Therefore, the law of conservation of energy was in effect during the entirety of this
experiment.