Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Lesson 6
Document related concepts
History of chemistry wikipedia , lookup
Chemical industry wikipedia , lookup
Enantioselective synthesis wikipedia , lookup
Biochemistry wikipedia , lookup
California Green Chemistry Initiative wikipedia , lookup
Electrolysis of water wikipedia , lookup
Supramolecular catalysis wikipedia , lookup
Marcus theory wikipedia , lookup
Safety data sheet wikipedia , lookup
Chemical equilibrium wikipedia , lookup
Nucleophilic acyl substitution wikipedia , lookup
Asymmetric induction wikipedia , lookup
Multi-state modeling of biomolecules wikipedia , lookup
Woodward–Hoffmann rules wikipedia , lookup
Electrochemistry wikipedia , lookup
Photoredox catalysis wikipedia , lookup
Hydrogen-bond catalysis wikipedia , lookup
Hydroformylation wikipedia , lookup
Physical organic chemistry wikipedia , lookup
Rate equation wikipedia , lookup
Process chemistry wikipedia , lookup
Acid–base reaction wikipedia , lookup
Registration, Evaluation, Authorisation and Restriction of Chemicals wikipedia , lookup
George S. Hammond wikipedia , lookup
Photosynthetic reaction centre wikipedia , lookup
Transition state theory wikipedia , lookup
Petasis reaction wikipedia , lookup
Strychnine total synthesis wikipedia , lookup
Chemical reaction wikipedia , lookup
Chemical thermodynamics wikipedia , lookup
Bioorthogonal chemistry wikipedia , lookup
Stoichiometry wikipedia , lookup
Transcript
Lesson 6 The Changes That Occur Two substances are mixed in a beaker. How do you know that a chemical reaction has occurred? The change in colour that occurs where the two liquids mix indicates that a reaction has occurred. The changes that occur when you mix substances together tell you that a reaction has occurred. In a chemical reaction, the substances you start with are not the same substances you end up with. Turn to page 28 of the textbook and read "The Changes That Occur." 4. The substances present before a reaction are called the ________________. 5. The substances present after a reaction are called the _________________. 6. List the three main indicators that a chemical reaction has occurred. 7. Are there any other indicators of a chemical reaction? 8. What evidence is there that a reaction has occurred in Figure 2.6? Turn to page 29 of the textbook and read "Combustion and Neutralization." 9. A chemical reaction in which a fuel is burned in the presence of oxygen is called a ___________ reaction. 10. The products of burning a candle in the presence of oxygen are _____________ and ______________. 11. Chemical reactions involving an acid added to a base to produce a new compound and water are called _____________ reactions. 12. What area of homemaking often involves acid-base reactions? 13. Taking an antacid is a common neutralization reaction. In this reaction you take a base to neutralize the excess acid in your stomach. a. What is the name of the base commonly found in antacid medication? b. Write out the word equation for the neutralization of stomach acid with an antacid. c. Which compounds are formed? 14. Toothpastes contain various ingredients to help clean your teeth. Read the information in "Did You Know?" on page 29 of the textbook. List the ingredients in your toothpaste. How many of the ingredients in your toothpaste match those given in the "Did You Know?" section?
