Lead poisoning affects the A) digestive system. B) endocrine ...

[RYAN BANYAN]

Lead poisoning affects the
 
  A) digestive system.
  B) endocrine system.
  C) reproductive system.
  D) central nervous system.

Question 2

The reaction 4Al (s) + 3O2 (g)  2Al2O3 (s) H = -3351 kJ is ________, and therefore heat is ________ by the reaction.
 
  A) endothermic, released
  B) endothermic, absorbed
  C) exothermic, released
  D) exothermic, absorbed
  E) thermoneutral, neither released nor absorbed

Question 3

A student mixes compound A with compound B and notices that a chemical reaction occurs. The temperature of the mixture decreases. The reaction is ________.
 
  Fill in the blank(s) with correct word

[kaylee05]

Answer to Question 1

D

Answer to Question 2

C

Answer to Question 3

endothermic

[RYAN BANYAN]

Thanks for the timely response, appreciate it

[xiaomengxian]

Gracias!