50 inch plasma tv screen went black. while watching tv all of a sudden my 3 year old samsung plasma tv (5054) went black. the sound still worked but the picture went black. i turned off and waited a few mins then turned it back on and it worked but then did it again.its a very hot day.hile watching tv all of a sudden my 3 year old samsung plasma tv (5054) went black. the sound still worked but the picture went black. i turned off and waited a few mins then turned it back on and it worked but then did it again. its a very hot day.
Reactants and Products in Chemical Reactions. In a chemical reaction, substances (elements and/or compounds) called reactants are changed into other substances (compounds and/or elements) called products. You canât change one element into another in a chemical reaction â that happens in nuclear reactions.
1 A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. 2  In a chemical reaction, the atoms and molecules that interact with each other are called reactants. 3  In a chemical reaction, the atoms and molecules produced by the reaction are called products.xplain that in most chemical reactions, two or more substances, called reactants, interact to create different substances called products. Tell students that burning a candle is an example of a chemical reaction.