Write the negation of the statement:  Some ostriches fly.

There are ___ protons, ___ electrons, and ___ neutrons in an atom of Xe.

Name the molecule CCl4:

In the following list, which is not an example of a chemical reaction? I.      the condensation of water vapor II.     a burning candle III.    iron rusting IV.    forming polyethylene from ethylene

Most of the elements on the periodic table are:

What is the physical state in which matter has a definite volume and has a definite shape?

The formula for chromium (V) oxide:

  Choose the statement that best describes the role of restriction enzymes in DNA profiling.

 In the Bacterial Transformation experiment , after incubation, which plate is likely to have zero growth?

  The acquisition of genetic material through the uptake of “naked” DNA molecules from the environment by bacteria is called: