Separating a Mixture Using a Magnet скачать в хорошем качестве

Separating a Mixture Using a Magnet

#ngscience #mixtures #separating Separating Mixtures – Magnetic Mixtures and Decanting A mixture of magnetic and non-magnetic solids can be separated using a magnet. A junkyard has a mixture of all kinds of solid matter. The metal in a junkyard has value as it can be sold to refiners where it is reused or recycled. To separate magnetic metals from the other solids in a junkyard, a powerful electromagnet is used. We can separate mixtures of liquids and solids by allowing the mixture to settle, then decanting the mixture. Decanting can be used to separate mixtures of matter that have different densities. In a mixture of sand and water, the sand is denser than water. When allowed to settle, the sand will sink to the bottom. The water can then by poured out, leaving only the sand. Mixtures and Solutions – What Are Mixtures? A bowl of fruit salad. It contains different kinds of matter. It contains different kinds of berries and other fruit. The fruit salad is an example of a mixture. A mixture is two or more kinds of matter that are mixed together. The different kinds of matter in a mixture retain their individual chemical properties, but the mixture may have new properties. It may be different in color, taste or have different melting and boiling points. Take a teaspoon of table salt and stir it into a glass of warm water. After a while, you will not be able to see the salt in the water. The salt dissolves in the water forming a solution of salt water. A solution is a mixture in which the matter has blended completely and remain evenly mixed. Air is a solution. It is a mixture of nitrogen, oxygen, carbon dioxide and other gases. People often mix different kinds of metals together or with other substances to produce a new metal with specific properties. They may be made to be lighter or stronger. These mixtures of metals are a type of solution called alloys. To make most alloys, different types of metals are melted and mixed together. When the solution cools, it changes back to a solid state, and the metal has new properties. Aluminum alloys contain mostly aluminum along with other metals, such as steel. They are often used when an object needs to be lightweight. Stainless steel is a metal solution made of iron and other metals. This makes it more resistant to the chemical change of rusting.