FAMILIA QUIMICA ANFIGENOS

Multiple Choice

What are the four elements represented in the image?

• Oxygen (O)

• Sulfur (S)

• Selenium (Se)

• Tellurium (Te)

Multiple Choice

What are the general properties of chalcogens?

• They react with water

• They form oxides and sulfides

• They are nonmetals

• They are gases at room temperature

Multiple Choice

What are the two allotropes of oxygen mentioned in the image?

• O2 and O3

• O2 and CO2

• O3 and N2

• O2 and H2

Multiple Choice

Characteristics that describe substances, not related to how they react

• Renewable

• Conservation

• Physical Properties

Multiple Choice

What is the method described for producing barium oxide (BaO) in the industry?

• Heating barium sulfate with oxygen

• Heating barium oxide with oxygen

• Heating barium carbonate with oxygen

• Heating barium hydroxide with oxygen

Multiple Choice

What is the process described for separating components of liquid air?

• Cooling air to -200 °C

• Heating air to 200 °C

• Mixing gases at room temperature

• Compressing air at high pressure

Multiple Choice

What is the process of ozone formation from oxygen as described in the image?

• O2 + rad UV(< 240nm) → O + O

• O + O2 → O3

• O3 + rad UV(< 320nm) → O + O2

• O + O3 → O2 + O2

Multiple Choice

Two gaseous forms of oxygen are diatomic oxygen, O₂, and ozone, O₃. These two forms of oxygen have

• the same molecular structure and the same properties

• the same molecular structure and different properties

• different molecular structures and the same properties

• different molecular structures and different properties

Multiple Choice

Which statement correctly describes two forms of oxygen, O₂ and O₃?

• they have identical molecular structures and identical properties

• they have identical molecular structures and different properties

• they have different molecular structures and identical properties

• they have different molecular structures and different properties

Multiple Choice

What was the main purpose of the Montreal Protocol established in 1985?

• To increase ozone levels in Antarctica

• To reduce the use of CFCs

• To promote the use of alternative energy sources

• To ban all chemicals harmful to the environment

Multiple Choice

When the Ozone Layer loses Ozone what happens to organisms on the earth's surface?

• They are exposed to Smog

• They are exposed to Acid Rain

• Nothing happens

• They are exposed to Ultraviolet B Radiation

Open Ended

¿Qué países están más afectados por el agujero?

Multiple Choice

What are the oxidation states of sulfur?

• -2, +2, +4, +6

• 0, +1, +2, +3

• -1, +1, +3, +5

• -2, +1, +3, +5

Multiple Choice

What are the macroscopic forms of sulfur shown in the images?

• Rhombohedral sulfur

• Monoclinic sulfur

• Molten monoclinic sulfur

• Plastic sulfur

Multiple Select

What are the names of the minerals listed in the image that contain sulfur?

• Pirita

• Galena

• Esfalerita

• Cinabrio

Multiple Choice

What are the applications of sulfur mentioned in the image?

• Vulcanization of rubber

• Manufacture of textiles

• Production of fertilizers

• All of the above

Multiple Choice

What is the chemical reaction for obtaining sulfur from hydrogen sulfide and oxygen?

• 2H2S(g) + SO2(g) → 3S(g) + 2H2O(g)

• H2S(g) + O2(g) → S(g) + H2O(g)

• Na2S2O3 + 2HCl → H2S2O3 + 2NaCl

• Na2S2O3 + 2HCl → SO2 + S + 2NaCl + H2O

Multiple Choice

What are the potential effects on health listed in the image?

• Neurological effects

• Cardiac damage

• Respiratory inflammation

• All of the above

Open Ended

What is the chemical reaction that forms sulfurous acid from sulfur dioxide and water?

Multiple Choice

What are the main uses of sulfurous acid?

• Synthesis of chemical products

• Disinfecting ships

• Preserving fruits

• Bleaching fabrics

Multiple Choice

What is the process for obtaining sulfuric acid using the contact method?

• Absorption

• Oxidation

• Distillation

• All of the above

Multiple Choice

What is the process represented in the image for producing sulfuric acid?

• Lead Chamber Process

• Glover Tower Process

• Gay-Lussac Tower Process

• Nitric Acid Process

Multiple Choice

What are the three forms of amorphous selenium mentioned in the text?

• Black vitreous

• Red monoclinic

• Gray crystalline

• All of the above

Multiple Choice

What is the estimated abundance of selenium in the Earth's crust?

• 0.1-0.2 ppm

• 1-2 ppm

• 5-10 ppm

• 0.01-0.05 ppm

Multiple Choice

What are some applications of selenium mentioned in the image?

• Used in xerographic copying

• Used in the production of glass

• Used as a pigment in plastics

• All of the above

Multiple Choice

What is the process described for obtaining selenium from the ashes of soda or sulfuric acid?

• Tostación de cenizas

• Mezcla con ácido

• Inyección de aire

• Reducción a selenio

Multiple Choice

What are the health effects of selenium poisoning?

• Hair loss and deformed nails

• Skin rashes and swelling

• Burns and irritation in the eyes

• All of the above

Poll

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