Science



The following You Tube video clips may be watched to help students with some concepts covered:
 * Chemis **** try **** in the Classroom **
 * Chemistry Quiz, Tuesday, May 13 **

Matter

[|www.youtube.com/watch?v=9xDNJSMikBo&list=PLQookYGy0LJtxFpLguljfzMGbwcK4GU3k]

Chemical and Physical Changes

[|www.youtube.com/watch?v=O1b8SMjeDLA]

[|www.youtube.com/watch?v=M8tyjwB42X4]

Cohesion and Adhesion

[|www.youtube.com/watch?v=VHnFMPxteGo]

Students are involved in activities and experiments to better understand how some solids can be separated in a mixture. Matter on earth is in one of these **3 states**: -solid - liquid - gas

We can create **different kinds of mixtures**: - 2 or more solids e.g., sand and salt - a solid and a liquid e.g. sugar and water - 2 or more liquids e.g., milk and tea

We can **separate different materials**: - using magnetism iron filings from sand - wind/air power remove lighter substances from heavier substances - water – separates floating materials from sinking materials - sieves/filters – separates particles of different sizes e.g. popcorn kernels from sand A chemical change is when there is a chemical reaction. The substance is changed to a new substance and cannot be changed back into the original substance. There may be clues that a chemical reaction took place, such as light, heat, color change, gas production, odor, or sound. A physical change occurs when __a substance changes but the substance does not turn into another substance.__ The substance can be changed back to the original substance. The type of change occurs when the size, shape, appearance, or volume of a substance is changed without changing its composition.

Students are involved in activities and experiments to better understand how some solids can be separated in a mixture. Students are learning to recognize and identify different kinds of mixtures. They will be involved in learning how to separate materials, and making a crystal. The properties of the surface of water will be addressed.