Matter and Change
Learning Log
This week in Chemistry, Chapter 1- Matter and Change was the main focus of the class. Safety is an important thing in science when doing any type of lab, the main reason for safety is for the protection of the people doing the lab. A person must always wear the appropriate eye protection when working on a lab, along with not wearing any loose clothing and no dangling accessorizes are allowed. Whenever there is an incident in the lab, a student needs to immediately tell the teacher, so the incident can be cleaned up, allowing no harm to the students. During labs, a student must always follow the instructions provided by the teacher and never horseplay because there is hazardous objects around the students when a lab is being performed. Students need to approach laboratory experiences in a serious manner and keep work areas clean, so floors and aisles can be kept free of equipment and materials. At the end of each lab, students must clean the laboratory area and wash their hands with soap and water before leaving the laboratory area. Besides safety being taught, the class learned about matter, which is the "stuff" that makes up the objects that has mass and takes up space. Its properties include the atom which is the smallest unit of an element and an element is a pure substance that can not be broken down. There is physical change which is a change in a substance, but not changing the substance identity. There is also chemical change, a change in which substances are turn into a new substance. A combination of two or more substances is called a mixture. The two types of mixtures are homogeneous mixture, which stays uniform throughout and some examples are salt and water. The other is heterogeneous mixture that doesn't stay uniform throughout and some examples are air with clouds and pizza. There are three types of elements, located in the periodic table, which are metals, conducts electricity and malleable, non-metals, brittle and does not conduct electricity, and semi-metals that act like both metals and non-metals and are semi-conductors of electricity.
Lab Abstract
The main purpose of this was lab was to fully determine which combination of soap and glycerin produces bubbles with the largest diameter. The largest bubble produced was twenty milliliters of water with an additional 5 drops of glycerin. These lab results indicate that the more quantity of solutions being mixed, the more larger the results will be. This lab can be more accurate if there is only person blowing the bubble and testing the different ratios of soap to glycerin. In the future, we can add a different solution to the lab to determine if it has little or big impact on the bubbles.
Lab Abstract
The main purpose of this was lab was to fully determine which combination of soap and glycerin produces bubbles with the largest diameter. The largest bubble produced was twenty milliliters of water with an additional 5 drops of glycerin. These lab results indicate that the more quantity of solutions being mixed, the more larger the results will be. This lab can be more accurate if there is only person blowing the bubble and testing the different ratios of soap to glycerin. In the future, we can add a different solution to the lab to determine if it has little or big impact on the bubbles.