The problem of the lab was to find the component in the mixture that had the highest composition by figuring out each of their masses (PS Dept., 2017). A mixture is an item that contains two or more pure substances, which are elements and compounds (Decoste, 2008). Elements and compounds are considered pure substances because they have a set composition, meaning the proportions are the same throughout the entire substance (Kavanah, 2016). Compounds can only be separated through chemical means. This is because the elements within a compound are chemically fused together (Decoste, 2008). There are two different types of mixtures: homogeneous and heterogeneous. Homogeneous mixtures consist of at least two pure substances that uniformly blend so that each component is easily distributed throughout the mixture (Decoste, 2008). An example of a homogeneous mixture in this experiment is the salt and the water; the salt dissolved into the water, which resulted in them mixing uniformly together. Heterogeneous mixtures consist of at least two pure substances that are not uniformly blended together; different regions of the mixture …show more content…
Filtration is used to separate a solid from a liquid. The heterogeneous mixture would be poured through a funnel that would have filter paper folded in it as seen in Figure 1, and that would then be attached to a container to catch the liquid. The solid would get caught by the filter paper, but the liquid would not, resulting in them separating (Decoste, 2008). Decantation is used when a solid and a liquid are together, and the liquid can easily be poured off. Magnetic separation is used to separate a metallic substance from a non metallic substance. In this experiment, iron was separated from sand and salt by using a magnet to pull it out. This technique only works if there is one metallic substance in the mixture (PS Dept.,
Forensic Science Introduction: Someone in a restaurant has suddenly fallen ill and a mystery powder has been discovered with the victim. As the chief investigator, your duty is to identify the mystery substance through a lab. In this lab, it will consist of five known compounds and one unknown compound. Your job is to distinguish which one out of the five substances is the mystery powder. To figure out the mystery matter you will have to compare their physical and chemical properties and match them with the appropriate compound.
The absorbance of these mixtures is measured at a suitable wavelength. If 'x' mole/litre are added to (1-x) mole/litre of M and if C1, C2
The objective of this experiment was to perform extraction. This is a separation and purification technique, based on different solubility of compounds in immiscible solvent mixtures. Extraction is conducted by shaking the solution with the solvent, until two layers are formed. One layer can then be separated from the other. If the separation does not happen in one try, multiple attempts may be needed.
Physical separation methods refer to any means of olefin/paraffin separation that use the physical properties between the species in order to achieve separation. These properties include size, shape, boiling point, vapour pressure, volatility etc.
1 Surface area 2 Temperature 3 Concentration 4. Mixing of the substances (stirring). I decided to do 2 different preliminary experiments so I could choose the best variable to investigate and see what equipment was necessary. to provide us with an accurate set of data. Our first preliminary experiment was testing what affect heat had on the rate of the reaction.
Solutions have three different stages that the solutes can be classified in: isotonic, hypertonic, and hypotonic. Isotonic is when the solutions have equal amounts of solutes. Like equilibrium, there is no net change in the amount of water in either solution. When the solutions have different concentration of solutes then the one with less solute is hypotonic and the one with more solute is hypertonic. Hypotonic takes in the solute from the hypertonic side that gives away the solute.
A mixture, according to definition, is a combination of components and substances mixed together to form one particular substance, uniform or not. Mixtures can be classified down to two types, homogeneous and heterogeneous. Homogeneous mixtures are generally uniform, or have the same consistent composition throughout, whereas heterogeneous mixtures are not entirely defined and vary in
The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical.
For this experiment we have to use physical methods to separate the reaction mixture from the liquid. The physical methods that were used are filtration and evaporation. Filtration is the separation of a solid from a liquid by passing the liquid through a porous material, such as filter paper. Evaporation is when you place the residue and the damp filter paper into a drying oven to draw moisture from it by heating it and leaving only the dry solid portion behind (Lab Guide pg. 33.).
Once the mixture had been completely dissolved, the solution was transferred to a separatory funnel. The solution was then extracted twice using 5.0 mL of 1 M
Saferstein lists the three forms that fall under: solid, liquid, and gas. “A solid is rigid and therefore has a definite shape and volume. A liquid also occupies a specific volume, but its fluidity causes it to take the shape of the container in which it is residing. A gas has neither a definite shape nor volume, and it will completely fill any container into which it is place” (2011, Pg. 120). Chromatography, spectrophotometry, and mass spectrometry are used to identify or compare organic materials.
- The amount of times the mixture was stirred. We stirred the mixture until the Ammonium Nitrate was dissolved, so the amount of times we stirred after each teaspoon was different.
By doing this experiment, I can know the physical and chemical properties of these samples. After I get my results about the physical and chemical properties of these samples, I can compare my results with the information given by the past student and identify the 5 unknown samples, finding out which sample is which substance. Hypothesis = ==
Once we know all the values of the ingredients, the value can be multiplied by the
1. Product mix (or product assortment) is a set of all products and items offered for sale by a company. A product mix consists of multiple product lines and can be characterized by such parameters as width (number of product lines in a product mix), length (total number of items in a product mix), depth (number of variants in the product line), and consistency (closeness of product lines in terms of production, distribution and use) (Kotler & Keller, 2012).