Introduction The purpose of this Lab was to identify the density of the unidentified object and determine what substance the unidentified object given by the teacher was. The density calculated in the experiment will stay the same because the density of the unidentified object will stay constant. The Independent Variable of this experiment was the calculated density and the unidentified object given. The Dependant Variable for this experiment was the density.
8) Explain how each experiment type (question 7) differs from the
Use the evidence provided by the tests to identify the mystery powder. The mystery powder (#5) is the baking powder. My partners and I figured this out because the physical and chemical properties of both of the substances are very similar. For example, both powders are not soluble in water, and they both turned red when they reacted with the universal indicator.
Hana Phan Mrs Thomas Honors Chemistry P. 2 9-20-17 Chapter 2 Booknotes 2.1 What is matter? matter - anything that has mass or volume volume - the amount of space an object occupies mass - a measure of how difficult it is to change the object’s state of motion atoms - the basic unit of matter molecules - a neutral group of atoms held together by chemical bonds physical properties - properties that can be observed or measured without changing the composition of matter state - the condition of being a gas, liquid, solid, plasma, or neutron star chemical properties - properties that can be observed only when substances interact with one another Matter is anything that has mass or volume. Volume is the amount of space an object occupies while
You can create an inventory policy for the office by scheduling inventory to be taken monthly, or weekly, whichever schedule fits your offices ordering needs. You could distribute the task among employees by doing it in pairs or assign a list of supplies that each person is responsible for keeping inventory of. A very vital tool for completing an inventory check is having a list of the supplies and equipment that you need to take inventory of. You can use Excel to create the inventory list. I would recommend that this list have at least two columns.
The location I chose for my inventory lab rotation is the Warm Springs Rehab Hospital in Kyle, TX. Warm springs rehab is a Hospital where patients are getting treated will and will be taken good care of and its also a place to feel comfortable such as a home. Which I spent two hours there. At the beginning, we were introduced to the Caroline Holt which is the dietitian of the Warm Springs Hospital, Caroline showed me and my partner the kitchen and she explained what they do on a daily bases, we also saw the dishwasher area which was very neat, then she showed us the cooking area which was next to the cooler, which is easier for them when they need to cook, which everything was organized and clean. After that we went to the office which was
The objective of the sludge lab was to determine how many different pure substances were in the sludge by using the methods and techniques we have learned throughout the year. We had to pick separation methods so we could separate our sludge and then test characteristic properties on our separated liquids and solids. This experiment made us use our knowledge on characteristic properties to pick the ones we should test to help us identify our pure substances. Characteristic properties are properties that help identify a solid or liquid. Each solid or liquid has a certain density, boiling point, solubility, flammability, so if you know what each one is then you can use that information to help you identify your solid or liquid.
All matter is made of particles, which can act a certain way depending on the differences in forms (liquid, solid, gas) and transitions, which can be observed with different properties as well as different appearances (size, color, etc). In the activity “How Small?” , we smashed a sugar cube to get smaller pieces of sugar. We also identified different types of sugar using properties. This evidence means that the sugar can have multiple sizes and different properties but can still be the same thing.
Messier objects, named after the French astronomer Charles Messier, are a set of 110 astronomical objects that include galaxies, nebulae and star clusters but explicitly excludes comets. Messier was only interested in comets but his findings were obscured with all sorts of other celestial bodies. He thus classed all non-comet bodies as Messier Objects that are represented by the letter ‘M’ and a number. This helped other comet Observers to narrow their search by avoiding these objects listed in the Messier catalogue. Target Objects I will be observing a few of these objects in this aided observation.
The idea of substance is capable of producing simple ideas in us, it is like the material substance which is essentially solid of which all material things are made of. 2. What are the degrees of our knowledge? Explain them. Intuitive knowledge: the ability for the mind to perceive the agreement or disagreement of two ideas immediately by themselves without proving or examining any other idea.
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
Properties of Substances Express Lab 1)The purpose of this lab was to compare the physical properties of different types of solids and how the properties of solids are determined by their intermolecular forces and their intramolecular bonds. Then we were to classify each type of solid as either ionic, metallic, non-polar molecular, polar molecular, or network. Paraffin wax classified as a non-polar molecular, Silicon dioxide was classifies as a network, Sodium chloride was classified as ionic, Sucrose was classified as polar molecular and Tin was classified as metallic. (2)The intermolecular forces that are present in Paraffin wax are dispersion forces, because it is non-polar and carries a negative charge. Followed by Sucrose that has
If a person asked what has four paws, claws, fur, and whiskers, someone would identify it as a cat because those are essential properties that make it a cat. It is the concrete individual thing which remains constant despite the fact that it changes and has different properties at different times (142). A tree's leaves might fall off during autumn,
Introduction Separation and purification of the chemical species from a mixture is a crucial part of nowadays chemical process industry. The latest improvements in membrane separation processes caused the growth of some industries, even some processes. Over the last years, membrane separation processes are utilized from the simple process units to the complex process units like reactors. Basically, when reactors operate with a membrane separation process, it is called as a membrane reactor. Several enhancements made in membrane technology, since the concept of membrane reactor was introduced, lead to the case that many companies find it convenient to use membrane reactors in order to accomplish the task.
You are given a known solid substance with its melting point which has high solubility in hot water and low solubility in cold water. You are assigned the following task: i. Determine if the substance is pure ii. If impure, find a suitable method for its purification by using the given information about the substance How would you proceed, clearly explain your rationale? i. To find if it is a pure substance we see if there is a change in melting point. ii.
