Summary: Using computer-generated animations, this program clearly demonstrates the structures and changes of state in water-specifically in ice melting, in water evaporating, and in water boiling-all at the molecular level. Each demonstration scientifically clarifies student misconceptions about the process and reinforces concepts that carry over into molecular change in other elements.
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program, divided into three parts, looks at the difference between melting and dissolving using the example of sodium chloride. The reaction of sodium chloride solution with silver nitrate exemplifies precipitation; ammonia, added to a solution of copper (II) nitrate, forms a copper (II) hydroxide gel; and the successive complexation of copper (II) by ammonia molecules serves as an...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program, divided into three parts, gives several examples of reactions: potassium thiocyanate solution with iron (III) nitrate solution to explain ionic equilibrium; acid-base chemistry, using ethanoic acid as an acid, and ethanoate ion and ammonia as bases; and copper metal with silver nitrate solution to illustrate redox chemistry.
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2009