cosmetology

3. require stylists to base the client's entire scalp with a protective cream prior to the chemical relaxer application.
4. a chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products
5. a colorless liquid with an unpleasant odor (like rotten eggs). It is used in making hair dressing solutions, pharmaceuticals and chemicals.
7. link together these polypeptide chains.
10. A substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound.
14. Permanent waves that have a 7.0 or neutral pH
17. a combination of a thio relaxer, followed by a thio permanent wave that is wrapped. on large rods
18. a functional group present in some proteins

1. used to straighten tightly curled hair.
2. involves a change in physical properties
6. problem solvers for stylists and clients in that they change the texture of the hair and can allow a person to wear just about any conceivable hair texture.
8. Neutralization of a thio permanent or relaxer is an oxidation reaction that re- builds the disulfide bonds that were broken during processing
9. the process of permanently rearranging the basic structure of overly curly hair into a straight form.
11. a colorless crystalline salt NH4OOCH2SH used in setting cold waves
12. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).
13. quantitative measure of the acidity or basicity of aqueous or other liquid solutions
15. A solution of a soluble base with pH greater than 7
16. occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.