Jill is doing an experiment on the movement of pill bugs. She will place the pill bugs on flat surfaces covered with diffirent materials to see how the texture of each material affects the bugs movement. How can JIll use her imagination in this experiment?

A. To follow steps of the procedure precisely
B. To think of different kinds of materials used
C. To carefully record the results as they happen
D. To replicate another student's procedure exactly

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

Areader can tell that the meaning of “obnoxious” will include “having the quality of something” because of the .a) prefix b)pronunciation c)suffix d) word root