2SAS #26- 34
26. Metallic elements are
more likely to lose electrons.
27. Noble gas elements are unreactive and chemically inert.
28.
a. cation.
b. cation.
c. anion.
d. cation.
e. anion.
f. cation
g. cation.
h. anion.
29.
27. Noble gas elements are unreactive and chemically inert.
28.
a. cation.
b. cation.
c. anion.
d. cation.
e. anion.
f. cation
g. cation.
h. anion.
29.
a. Copper
metal ions because copper metals form cations, and the only difference between
copper metal and copper (II) ions is the absence of 2 electrons.
30. 156+254=410
410/2=205; 205 pm.
The diameter of a calcium ion (Ca^2+) = 205 pm.
31. a.
Chemical cause: oxidization or rusting results in a change in color.
Physical cause: painting a substance results in a change in color.
b.
Chemical cause: combustion causes a change in temperature.
Physical cause: boiling a substance will raise the temperature.
c.
Chemical cause: the reaction of HCl and Cu causes the formation of a gas.
Physical cause: after boiling, water will become a gas (water vapor) as it evaporates.
30. 156+254=410
410/2=205; 205 pm.
The diameter of a calcium ion (Ca^2+) = 205 pm.
31. a.
Chemical cause: oxidization or rusting results in a change in color.
Physical cause: painting a substance results in a change in color.
b.
Chemical cause: combustion causes a change in temperature.
Physical cause: boiling a substance will raise the temperature.
c.
Chemical cause: the reaction of HCl and Cu causes the formation of a gas.
Physical cause: after boiling, water will become a gas (water vapor) as it evaporates.
32.
a. Bromine (Br).
b. Silicon (Si).
a. Bromine (Br).
b. Silicon (Si).
33.
In analyzing our Snake River data to solve the fish-kill mystery in Unit 1, we had to compare mass changes among the different substances we tested for with the normal masses. We used our knowledge of properties of the different substances to create legitimate and logical hypotheses.
34. Argon would have had to be placed after potassium and cobalt would have had to be placed after nickel, in order to be accurate in Mendeleev's original periodic table.
2SBS:
1.
Atmosphere: nitrogen, oxygen, neon, and argon.
Hydrosphere: water and dissolved minerals.
Lithosphere: petroleum and metal-bearing ores.
2. a.
The crust: top 40km: the thin band of soil and rock containing major raw materials needed to build all manufactured objects.
The mantle: 40-2900km: the middle layer of the lithosphere.
The core: 2900km: Earth's center: extremely hot.
b.
The crust serves as the main storehouse of chemical resources used in manufacturing consumer products.
3. a. Mexico.
b. Japan.
c. China.
4. China produces the largest masses of the eight listed resources.
5. Ores are naturally occurring rocks or minerals that can be mined and from which are profitable to extract a metal or other metal. Minerals are naturally occurring solid compounds containing the element or group of elements of interest.
6. -the quantity of useful ore found at the site.
-the percent of metal in the ore.
-the type of mining and processing needed to extract the metal from its ore.
-the distance between the mine and metal-refining facilities and markets.
-the metal's supply-versus-demand status.
-the environmental impact of the mining and metal processing.
7. Maybe the gold had replenished after 100 years and demand for gold was high.
8. Useful ore refers to the amount, usually as a percent, of the desired mineral being mined.
In analyzing our Snake River data to solve the fish-kill mystery in Unit 1, we had to compare mass changes among the different substances we tested for with the normal masses. We used our knowledge of properties of the different substances to create legitimate and logical hypotheses.
34. Argon would have had to be placed after potassium and cobalt would have had to be placed after nickel, in order to be accurate in Mendeleev's original periodic table.
2SBS:
1.
Atmosphere: nitrogen, oxygen, neon, and argon.
Hydrosphere: water and dissolved minerals.
Lithosphere: petroleum and metal-bearing ores.
2. a.
The crust: top 40km: the thin band of soil and rock containing major raw materials needed to build all manufactured objects.
The mantle: 40-2900km: the middle layer of the lithosphere.
The core: 2900km: Earth's center: extremely hot.
b.
The crust serves as the main storehouse of chemical resources used in manufacturing consumer products.
3. a. Mexico.
b. Japan.
c. China.
4. China produces the largest masses of the eight listed resources.
5. Ores are naturally occurring rocks or minerals that can be mined and from which are profitable to extract a metal or other metal. Minerals are naturally occurring solid compounds containing the element or group of elements of interest.
6. -the quantity of useful ore found at the site.
-the percent of metal in the ore.
-the type of mining and processing needed to extract the metal from its ore.
-the distance between the mine and metal-refining facilities and markets.
-the metal's supply-versus-demand status.
-the environmental impact of the mining and metal processing.
7. Maybe the gold had replenished after 100 years and demand for gold was high.
8. Useful ore refers to the amount, usually as a percent, of the desired mineral being mined.
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