matter is neither created or destroyed and it is only rearranged 2. In chemical reactions‚ the molecules stay the same‚ they are just rearranged to form a different substance Mixtures and Substances 1. A pure substance is a substance that consists of only one component and has a definite composition 2. A mixture is two substances that are mixed but not combined chemically 3. A pure substance has only one
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experiment is to uncover whether or not the Expo Markers are homogeneous or heterogeneous mixtures. The experiment will conduct filter paper being slightly submerged in a container of water and inspected for pigmentation changes. In the experiment the pigments will rise up the filter paper once exposed to the water (solvent). After the experiment‚ it concludes that the mixture is a homogeneous mixture due to the chemical values equaling out with one another. Date:Tuesday‚ January 14‚
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sugar‚ water‚ and food coloring were used which means that the sugar and food coloring were mixed in the water and looked like part of the water. This is also a “homogeneous mixture” because it appeared the same throughout (both on the visual level and particle level). The reason the sugar particles could not be seen in the mixture was because the sugar broke down and got smaller. Also the reason the food coloring looked lighter after the sugar was mixed in was because the particle spread apart more
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fill the container they are in‚ and have the ability to flow. ● Slide 6: What are the major differences in pure substances and mixtures? A pure substance always has the same composition and intensive (internal) properties (boiling point‚ density‚ freezing point‚ temperature). Since a pure substance has a fixed composition‚ you can write a formula for it. A mixture has a variable composition therefore there is not ONE formula for it. Slide 7 and 9: What are the differences in elements and compounds
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complete sentences‚ explain the purpose of this lab – what are you going to learn in this lab? (2 points) HYPOTHESIS: Answer the following in complete sentences: (2 points) 1. List one extensive and one intensive property of marker ink. 2. Define mixture. MATERIALS: coffee filter Tape rubbing alcohol water 3 different color magic markers (not permanent) 3 identical tall‚ narrow drinking glasses metric ruler 3 pencils PROCEDURE: 1. Cut 3 strips of coffee filter. Be sure that the strips are much
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2 or more elements‚ it is still considered a pure substance because while the elements bond so do the atoms. Therefore there is only one type of atom in the compound. Impure substance- Mixture: A substance that is made up of 2 or more different particles (Making it impure). There are 2 different types of mixture: Homogenous
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call walls. A 1:1 mixture of hexane and acetone was determined to best solvent for this extraction. Knowing this add one mL of the pure hexane and one mL of the pure acetone to the mortar. Grind the contents until the cell walls have been adequately broken. Transfer the mixture to a centrifuge tube to separate the sample into layers‚ to help remove the water. Once the sample is finished spinning extract the organic layer and place in a test tube. TLC: To determine which mixture acetone and hexane
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Making an Impression with Irreversible Hydrocolloid Sharon Sparks Miss O’Keefe LB101 January 19‚ 2010 Irreversible Hydrocolloid impression material also called
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In “The Fracking Truth‚” Chris Faulkner argues that fracking has almost no consequences. Perhaps the strongest argument that Faulkner gives for this claim relies on three claims that (1) subsurface contamination from fracking is almost impossible‚ (2) low concentrations of any harmful chemicals used in fracking would be negligible and (3) earthquake activity caused by fracking are nearly moderate to small. In this paper‚ I will argue that this argument fails because there are many consequences of
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is submerged‚ mouth downward in water. Only a small volume of water rises into the tube‚ which is actually filled with invisible matter‚ that is air. System The body of matter under consideration‚ study or observation. Example: In an ice water mixture ice is the solid phase and water is the liquid phase. The system is the ice and water together. 6 Homogeneous System and Heterogeneous System Homogeneous 7 Heterogeneous Homogeneous System and Heterogeneous System Homogeneous System – Matter
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