https://padlet.com/3014501/w48cdwgqvo73 Made with a wish on a star en-us 2017-03-28 21:05:49 UTC 2025-10-04 06:58:20 UTC hello@padlet.com 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270288 A process where one or more substances change to make one or more new substances.]]> 2017-03-28 21:27:21 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270288 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270306 A solid substance that forms as a chemical reaction in a solution.]]> 2017-03-28 21:27:31 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270306 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270328 A chemical reaction in which heat/energy is released. ]]> 2017-03-28 21:27:40 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270328 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270360 A chemical reaction where heat is taken in.]]> 2017-03-28 21:27:55 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270360 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270375 The law that states that "energy cannot be created or destroyed but can be changed from one form to another". ]]> 2017-03-28 21:28:02 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270375 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270396 A combination of chemical symbols and numbers to represent a substance. It shows how many atoms of each kind of element are in a molecule. ]]> 2017-03-28 21:28:12 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270396 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270411 A "representation" of a chemical reaction that uses chemical symbols to and formulas as a short way to describe a chemical reaction. ]]> 2017-03-28 21:28:18 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270411 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270424 A substance or molecule that is part of a chemical reaction. ]]> 2017-03-28 21:28:25 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270424 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270431 A substance that forms in a chemical reaction. ]]> 2017-03-28 21:28:27 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270431 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163270447 The law that states that "mass cannot be created or destroyed in ordinary chemical and physical changes". ]]> 2017-03-28 21:28:35 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163270447 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163272139 2017-03-28 21:41:00 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163272139 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163272182 2017-03-28 21:41:14 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163272182 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163272432 Key Concept: During chemical reactions, atoms rearrange to form new substances that have different properties than the original substances had. 

The properties of the substances mad by a chemical reaction are different from the properties of the starting substances. ]]> 2017-03-28 21:42:32 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163272432 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163272748 Four signs that may indicate that a chemical reaction may be taking place are:
1. a change in color 
2. a change in the formation of a gas 
3. a change in the formation of a precipitate 
4. change in energy. ]]> 2017-03-28 21:44:45 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163272748 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163273002 In a chemical reaction, new substances that have different chemical and physical properties than the original substances are formed. ]]> 2017-03-28 21:46:54 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163273002 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163273320 In a chemical reaction, chemical bonds are broken down and atoms rearrange. 

A chemical reaction absorbs or releases energy, ]]> 2017-03-28 21:49:31 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163273320 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163273473 Key Concept: Chemical formulas and chemical equations are used to show how atoms are rearranged to form new substances in a chemical reaction. 

The subscripts in a chemical formula tell you how many atoms of each element are in the substance. A coefficient is used before a formula to balance a chemical equation. ]]> 2017-03-28 21:50:49 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163273473 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163273785 Chemical formulas are a way to tell which elements are in a chemical substance. ]]> 2017-03-28 21:53:34 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163273785 3014501 https://padlet.com/3014501/w48cdwgqvo73/wish/163273884 Chemical equations are a way to determine how atoms are rearranged in a chemical reaction. 

A balanced chemical equation shows the law of conservation of mass. ]]> 2017-03-28 21:54:22 UTC https://padlet.com/3014501/w48cdwgqvo73/wish/163273884