#19:
a. gained electrons
b. neither
c. neither
d. losing electrons
e. losing electrons
#20:
a. H
b. Na+
c. Cl-
d. Al3+
#21:
a. Potassium iodide(KI)
b. Calcium sulfide (CaS)
c. Iron bromide (FeBr2+)
d. Barium hydroxide (BaOH+)
e. Ammonium phosphate
f. Aluminum oxide (AlO+)
#22:
The periodic table was created to organize the elements in a manner so that their properties were in order.
#23:
A bar graph.
#24:
a. It helps you lay out your investigation and prepare for what you are about to do.
b. Data tables are good for recording data in the midst of a lab.
c. After an investigation, the data table helps you remember what happened during your lap.
#25:
a. The ion cards help you understand why the organization of the periodic is crucial.
b. They are imperfect models because they're only a little bit of information on a smaller scale.
#26:
CR2+ and CA2+C- aren't balanced so there would be a reaction.
#27:
B because zinc is more reactive than silver.
#28:
a. The lead nitrate would react with the iron because iron is more reactive than lead.
b. No3-Pb+2 + Fe+2
b. Calcium sulfide (CaS)
c. Iron bromide (FeBr2+)
d. Barium hydroxide (BaOH+)
e. Ammonium phosphate
f. Aluminum oxide (AlO+)
#22:
The periodic table was created to organize the elements in a manner so that their properties were in order.
#23:
A bar graph.
#24:
a. It helps you lay out your investigation and prepare for what you are about to do.
b. Data tables are good for recording data in the midst of a lab.
c. After an investigation, the data table helps you remember what happened during your lap.
#25:
a. The ion cards help you understand why the organization of the periodic is crucial.
b. They are imperfect models because they're only a little bit of information on a smaller scale.
#26:
CR2+ and CA2+C- aren't balanced so there would be a reaction.
#27:
B because zinc is more reactive than silver.
#28:
a. The lead nitrate would react with the iron because iron is more reactive than lead.
b. No3-Pb+2 + Fe+2
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