Sulfur: One Of The Periodic Table Of Elements

In the ECM activity, learning how to identify whether an object was an element, component, or a mixture and whether it was a homogeneous and heterogeneous was clarified. An element is made up of only one type of atom and no other. It is also known as pure substances. Elements are different from compounds and mixtures since they both have two or more atoms while elements contain one of the pure elements. A material is an element if found in the Periodic Table of Elements. Sulfur, lead, tin, aluminum, copper, and helium, which were part of the activity, all appeared on the table, making them elements. However, because there are different forms an element may take, along with different names for the forms. For example, graphite is one of the two pure forms, or allotropes, of carbon. It is not a compound or mixture because it is still essentially 100% carbon. Since carbon is on the table, it is an element.

Similar to compounds, there is usually more than one atoms involved but they are not chemically bonded. Bronze, granite, ink, soda, air, fruit loops, and dirt are mixtures. They can be categorized as two types of mixture, homogeneous and heterogeneous. Homogeneous mixture is when the substances are hard to identify their initial substance because it’s evenly dissolved and and has the same properties throughout. It is also called a solution. Air, baking soda, and ink are examples of homogeneous mixtures. Bronze is also a homogeneous mixture because it is a solid mixture, known as an alloy. Heterogeneous mixtures does not dissolve easily or spread evenly, making it easy to identify the different properties from each region and to separate. Colloid and suspension substances fall under this category. With granite, dirt, and fruit loops, their initial substance could be identified and physically separated without changing it