Describe what selectively toxic means 

When heated, zinc and sulfur combine to form a new compound, zinc sulfide.  In this reaction, Both Zn and S are oxidized. Both Zn and S are reduced. S is oxidized and Zn is reduced. Zn is oxidized and S is reduced.

When magnesium burns in oxygen the result is magnesium oxide.  This is an example of a _________________ reaction. decomposition synthesis single displacement double displacement

Given the accompanying partial activity series, predict which of the following reactions will occur as written. Zn –> Zn2+ + 2e– Fe –> Fe2+ + 2e– Co –> Co2+ + 2e– Ni –> Ni2+ + 2e– Cu –> Cu2+ + 2e–

The net ionic equation for any aqueous acid-base neutralization reaction is H+ (aq) + OH- (aq) –> H2O (l) Na+ (aq) + Cl- (aq) –>  NaCl (s) 4 H+ (aq) + O2 (g) –> 2 H2O (l) Na+ (aq) + OH- (aq) –> NaOH (aq)

What is the empirical formula for hydrazine, N2H4? Proper element abbreviation and use of parentheses ( if any) is needed to receive credit

The reduction half-reaction for the reaction of zinc with hydrochloric acid is ___. Zn2+ + 2e– –> Zn Zn –> Zn2+ + 2e– H2 –> 2H+ + 2e– 2H+ + 2e– –>  H2

In the context of chemical reactions, oxidation means ___. the gain of electrons the loss of electrons the loss of oxygen the loss of water

Modules 7-9 Quiz   Quiz Instructions The Modules 7 – 9 quiz is worth 15 points and you have 25 minutes to complete the quiz.  The quiz will be available until the end of the day on Friday, March 11th.

Patterned searches allow the crime scene technician to methodically search the scene; they include the following: