Author: Anonymous

¿Qué es? Write a sentence that clearly demonstrates the meaning of each of the items on the list. You can use your imagination, but your sentences must be logical. (10 x 2 pts. each = 20 pts.) Modelohacer diligenciasHago diligencias los sábados: voy al banco, al supermercado y a la lavandería. Reference: ¿Qué es? el banco

. The number 0.02100 is properly expressed in scientific notation as a. 0.21 X 10‑1 b. 2.1 X 10‑2 c.   2.100 X 10‑2 d.  21.0 ´X 10‑3            

An example of an element is      a. ozone gas, O3.      b. water, H2O.      c. benzene, C6H6.      d. carbon dioxide gas, CO2.        

A broad generalization based on the results of many experiments is called a. the scientific method. b.   a scientific law. c.   a theory. d.  a hypothesis.  

Which of these statements are correct for both addition and condensation polymerization?  i. Monomer units chemically bond together ii. Product contains all the atoms of the starting material iii. A second product, like water, is also formed during the polymerization process            

Which equation below shows the addition polymerization of ethylene?

¿Qué es? Write a sentence that clearly demonstrates the meaning of each of the items on the list. You can use your imagination, but your sentences must be logical. (10 x 2 pts. each = 20 pts.) Modelohacer diligenciasHago diligencias los sábados: voy al banco, al supermercado y a la lavandería. Reference: ¿Qué es? el supermercado

 Why is water a good solvent for cooking?

  This is a representation of a plastic bag being stretched. Which statement best describes what is happening in the figure?               

Semiconductors, such as the element silicon, may be used in cells that convert solar radiation to electricity. One of the major difficulties encountered in using silicon is that it