Mixture

of the Mixed Substances lab was to see how properties of individual substances compare with properties of mixed substances. A mixture is a combination of two or more substances that are mixed together physically but not chemically. There are two different types of mixtures; homogeneous and heterogeneous. A homogeneous mixture is uniform in structure or composition throughout the substance. A heterogeneous mixture consists of dissimilar parts or elements that are not the same. My hypothesis was that when the cornstarch and water are mixed together, it would make a new liquid substance. The Investigating Mixtures lab had the objective to observe that not all liquids behave the same way when mixed with other liquids. My hypothesis for this lab was that when the colored water is mixed with vegetable oil, the…

Purpose: The objective is to separate the heterogeneous mixture of salt, iron filings, and salt into each pure form using filtration, evaporation, and magnetism. Background: When separating a mixture, preferably to separate a mixture that includes a soluble liquid and a insoluble solid, filtration is the best because solid molecules are bigger than liquid molecules. A filter contains pores that are small enough to let small partials though the pores while holding back the larger particles.…

¨All Mixed Up!¨ Purpose: To separate out four components of a mixture using their unique properties in order to better understand matter: substances vs mixtures and their definitions as well as to better understand phase changes as well as physical vs chemical change. Materials: -Beakers -Graduated cylinder -metal screen -tongs -ring stand -bunsen burner -ring -wire gauze -hot plate -crucible -clay triangle -balance -magnet -stirring rod -plastic bag -paper towels…

This particular lab will focus on separating the components of a ternary mixture, which is a mixture that contains three substances. Both physical and chemical methods are available for separating the components of a mixture. Physical methods use differences in the physical properties of components of a mixture, while chemical methods involve the selective reaction of one of the components of a mixture to form a new substance. In this experiment, five methods of separation will be used:…

Title: Separations of a Mixture Notes: - H¬2O, Copper Sulfate, Starch - H2O (water)- liquid, solvent, boiling point: 100 C, freezing point: 0 C. - Copper Sulfate- solid, soluble, forms an aqueous solution, is a salt. - Starch- solid, macromolecule (long chain sugar), not very soluble in water at low temperatures. - When H2O, Copper Sulfate, and starch are mixed together, it forms a heterogeneous mixture. - Aqueous solution of copper sulfate with a suspension of starch. Research Question: What…

spreads throughout. Some of the solute dissolves within the mixture, but the rest sinks to the bottom, the water becomes a transparent, whitish color. When mixing the mixture, the salt will spread evenly throughout and become homogenous. This is physical because nothing changed, the substances just mixed and it is able to be undone. Burning paper is a chemical reaction The lens paper is thin, crinkly, white, and easy to tear. After the paper was lit, it burnt quickly starting at the edges and…

Purpose: We already knew that the chemical properties of each pure substance are not are not changed after separation in a mixture. The key to find a physical property that one part of the mixture does have but the parts of the mixture doesn’t. In magnetism a magnetically susceptible material is extracted from a mixture depending on a magnetic force. Filtration is separation of an insoluble solid and a liquid. Filtration depends on solubility, the filtrate is the one want to keep (liquid) and…

water is very hot so be careful! Keep stirring until the mixture is cool enough to knead (press and squeeze and fold on a hard, lightly floured surface). Knead the dough well and then place it in the tray. To prepare the gravel model, pour dry Grape-Nuts cereal into another tray until it is about half full. To prepare the alluvium model, mix about 2-3 cups of dry Grape-Nuts cereal with about 1 cup of water and pour the mixture into another tray until it is about half full. To prepare the sand…

The gas bubbles was caused by the mixture of baking soda and phenol red. Though we did not have any labs in which liquid was exempt from the experiment it is something that we were looking at as a possible future trial. In the future we could mix calcium chloride with sodium bicarbonate to observe the reaction but i think that if the two were mixed without any liquid then there would not be any significant change. The reasoning is that sodium bicarbonate needs some source of liquid to create…

The 50-50 Mixture was the first substance that started to melt sharply. Its melting point started at 98.7 ͒C and ended at 101.5 ͒C where it was completely liquefied. This substance out of all three took the slowest to become a liquid. Urea was the second substance that started to melt at 133.3 ͒C and ended at 133.5 ͒C. Right after Urea was completely a liquid, Trans-Cinnamic acid began its melting point at 133.5 ͒C and ended at 134.2͒ C. Both Urea and Trans-Cinnamic acid took a while to begin the…