October 7, 2015
Lab Experiment #5
Lab 5: Heat and Calorimetry
The purpose of the Heat and Calorimetry lab is to determine how many calories are in certain junk
foods, by measuring the amount of heat each sample produces when burned.
Should scientists be responsible for the negative impacts of their discoveries? This is a bit of a hard question
for me. For example, the Manhattan project was a large process that was taking place, not one single person
was behind everything and they had
Should scientists be responsible for the negative impacts of their discoveries? This is a bit of a hard
questions for me. For example, the Manhattan project was a large process that was taking place, not one
single person was behind everything and they ha
Lab 3: Measurements
Experiment: Density of Water
Table 3: Procedure Part 1 Data
Mass of cell (g)
Mass of water and cell (total,
Mass of water
(total mass minus cell mass)
Lab 3: Measurements
1. What is the importance of significant figures in chemistry?
Significant figures are important because they tell us how precise something is.
2. State the number of significant figures in each case.
1. A statement or claim is scientific if it is disprovable or repeatable. Even if a scientific claim is
incorrect, it will be able to be disproved through a collection or data; because it can be disproved
it is considered scientific. If a statement is non
Lab 4: Properties of Matter - Density
1. What can cause the density of the same substance to change?
Temperature or pressure.
2. List two possible hazards in this laboratory experiment.
Getting the chemicals on your skin, or
Royal Science of Chemistry. (2016). Chemical Science. Retrieved from http:/www.rsc.org/journalsbooks-databases/about-journals/chemical-science/
On this site I found databases, articles and journals related to the science of chemistry. The site includes
Metals and Oxidation
November 18, 2015
Introductions to Chemistry 101
Professor Chandra Ravilochan
Objective is to test the various metals and the citric acid solution and observe how each metal
reacts to the citric acid sol
The household cleaner that I choose is Windex. The chemical name for Windex is ammonia which is a
compound of nitrogen and hydrogen. Windex also contains detergent, dyes and fragrances. The
molecular formula is NH3. If Windex was just labeled as ammonia,