Transcript of Copy of Mixtures and Solutions
All mixtures can be separated into two groups: Homogeneous and Heterogeneous. Mixtures and Solutions A homogeneous mixture is the same throughout. A heterogeneous mixture has visible different parts. Butter appears to be the same throughout, therefore is it homogeneous? You can see the different parts of the salad, which makes the mixture heterogeneous. Mixtures can also be suspensions, colloids, or solutions. Suspensions are mixtures in which the particles are dispersed throughout the liquid or gas, but they are large enough to settle out eventually. Cereal in milk is a suspension because the cereal floats to the top of the milk. In a colloid, the particles are dispersed throughout, but are not heavy enough to settle out. Gelatin is a colloid because the particles in it scatter light, don't pass through a filter, and don't settle out. A solution is a mixture that appears to be a single substance. The particles in a solution are dispersed evenly amongst each other. There are many parts to a solution. A mixture is a combination of two or more substances that are physically combined. There are many mixtures all around us. Even the air we breathe is a mixture! The particles in a solution are distributed evenly by dissolving. The amount of solute dissolved in the solvent is the concentration. Solutions can be concentrated (have a high concentration) or dilute (have a low concentration). Lemonade is a solution because it looks like one substance, but is it really sweetener dissolved in water. The solute in lemonade mix and the sweetener, and the solvent is water. Solubility is the solute's ability to dissolve in the solvent at a certain temperature. A compound is made when two or more elements are chemically combined. Table salt is made when Chlorine and Sodium combine chemically. Mixtures Heterogeneous Homogeneous Concentration Solvent Solute Solubility Dilute Solutions Colloids Suspensions Compounds Two Objects Put Together Combined chemically Combined physically Visible different parts Looks the same throughout Looks clear Looks foggy Homogeneous If you had lemonade with too much sweetener in it, it will be concentrated and taste really sweet. If you had lemonade with not enough sweetener, it will be dilute and will taste too watery. So to recap: Do now:You add sugar to Full transcript
ice teas, kool aid, and
even soft drinks. Has the
sugar disappeared? Take a guess at what those two words mean?
Homogeneous and Heterogeneous. Butter is homogeneous In solutions, the solute is the substance being dissolved. The solvent is the substance that the solute is dissolved in. How do you think temperature
affects soluability? Explain the difference between
elements, compounds, and mixtures