CHAPTER 14 CHEMICAL REACTIONS
CHAPTER 14 SUMMARY
In chapter 14 the sections talk about how different chemical reactions are formed,and how the diffrerent chemical equations are writtten to form new substances like water and oxygen. In the first section, it talks about chemical reactions and about different signs of chemical reactions,it also talks about precipitates which are results of chemical reactions. In the second section it teaches you how to write chemical formulas,equations, and the difference between each symbol and how to tell them apart. It also tells you about one of the two very important laws of physics which include the LAW OF CONSERVATION OF MASS, which states that matter of any substance cannot be created or destroyed . For section 3 of chp.14 it shows different types of chemical reactions such as; synthesis reactions,decomposition reaction,single displacement,and double displacement reaction, and they form new substances. Finally to round it up, for section 4 it talks about chemical energy such as the exothermic and endothermic reactions. Section 4 also talks about the second of the two most important laws LAW OF CONSERVATION OF ENERGY, which states that energy cannot be created or destroyed, the lesson also talks about activation energy, inhibitors, and catalyst.
VOCABULARY
1. chemica reaction: the process by which one or more substances change to produce one or more different substances
2. precipitate: a solid that is produced as a result of a chemical reaction in a solution
3. chemical formula: a combination of chemical symbols and numbers to represent a substance
4. chemical equation: a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
5.reactant: A substance or molecule that participates in a chemical reaction 6.product: The substance that forms in a chemical reaction
7.law of conservation of mass: the law states that mass cannot be created or destroyed in ordinary chemical and physical changes
8. synthesis reaction: a reaction that occurs when two or more substances combine to form a new compound
9. decompositon reaction: a reaction in which a single compound breaks down to form two or more simpler substances
10. single-displacement reaction: a reaction in which one element or radical takes the place of another element or radical in a compound
11. double-displacement: a reaction in which a gas,solid precipitate,or a moleculeculer compound forms from the exchange of ions between two compounds
12. exothermic reaction: a chemical reaction in which energy released
13. endothermic reaction: a chemical reaction in which energy is taken in
14. law of conservation of energy: a law that states that energy cannot be created or destroyed
15. activation energy: the smallest amount of energy molecules need to react
16.inhitor: a substance that slows down a chemical reaction
17. catalyst: a substance that speeds up a chemical reaction
2. precipitate: a solid that is produced as a result of a chemical reaction in a solution
3. chemical formula: a combination of chemical symbols and numbers to represent a substance
4. chemical equation: a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
5.reactant: A substance or molecule that participates in a chemical reaction 6.product: The substance that forms in a chemical reaction
7.law of conservation of mass: the law states that mass cannot be created or destroyed in ordinary chemical and physical changes
8. synthesis reaction: a reaction that occurs when two or more substances combine to form a new compound
9. decompositon reaction: a reaction in which a single compound breaks down to form two or more simpler substances
10. single-displacement reaction: a reaction in which one element or radical takes the place of another element or radical in a compound
11. double-displacement: a reaction in which a gas,solid precipitate,or a moleculeculer compound forms from the exchange of ions between two compounds
12. exothermic reaction: a chemical reaction in which energy released
13. endothermic reaction: a chemical reaction in which energy is taken in
14. law of conservation of energy: a law that states that energy cannot be created or destroyed
15. activation energy: the smallest amount of energy molecules need to react
16.inhitor: a substance that slows down a chemical reaction
17. catalyst: a substance that speeds up a chemical reaction
chemical reaction
In this picture to the left shows a chemical reaction like wood burning. click here for more info