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Quiz about Chemistry Fun Trivia Style
Quiz about Chemistry Fun Trivia Style

Chemistry: Fun Trivia Style Trivia Quiz


This quiz is on specific elements in the periodic table, specifying compounds, and other calculations.

A multiple-choice quiz by ebanks120. Estimated time: 3 mins.
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Author
ebanks120
Time
3 mins
Type
Multiple Choice
Quiz #
380,803
Updated
Dec 03 21
# Qns
10
Difficulty
Average
Avg Score
6 / 10
Plays
320
- -
Question 1 of 10
1. Which of these elements is in the s-block of the periodic table? Hint


Question 2 of 10
2. Which of the following is a non-electrolyte? Hint


Question 3 of 10
3. How many protons and neutrons are in a Carbon-13 isotope? Hint


Question 4 of 10
4. Which of the following is a valid set of quantum numbers? Hint


Question 5 of 10
5. What is the molality of a solution consisting of 0.359 moles of solute and 50g of solvent?


Hint


Question 6 of 10
6. Brass is an alloy consisting of what two metals? Hint


Question 7 of 10
7. The formula for sucrose is C12H22O11. What is the oxidation number of carbon in this formula? Hint


Question 8 of 10
8. If an aqueous solution has a pH of 13.6, then it is which of these? Hint


Question 9 of 10
9. What intermolecular forces occur when a polar molecule interacts with a nonpolar molecule? Hint


Question 10 of 10
10. What phase change occurs when water becomes steam? Hint



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Quiz Answer Key and Fun Facts
1. Which of these elements is in the s-block of the periodic table?

Answer: Hydrogen

Elements on the s block are hydrogen, the alkali metals (lithium, sodium, potassium, rubidium, cesium, and francium), and the alkaline earth metals (beryllium, magnesium, calcium, strontium, barium, and radium). They can have up to two electrons in their outermost shell.
2. Which of the following is a non-electrolyte?

Answer: Ethyl alcohol

A non-electrolyte does not dissociate in water whereas electrolytes do. Common non-electrolytes are alcohol, sugar, water, and other carbon compounds, while electrolytes include acids, bases, and soluble salts.
3. How many protons and neutrons are in a Carbon-13 isotope?

Answer: 6 protons and 7 neutrons

Isotopes are nuclei that have a different number of neutrons while always keeping the same number of protons. That yields a different atomic mass. The atomic number of carbon is 6, so that means it has 6 protons. A carbon-13 isotope has an atomic mass of 13. That gives it 7 neutrons because the atomic mass is the sum of protons and neutrons.
4. Which of the following is a valid set of quantum numbers?

Answer: n=4, l=3, ml=-1, ms=1/2

The quantum number n represents the size of the orbital. It can be any number 1 and above. The quantum number l stands for the orbital's shape. It can be 0 up to the value before n. The quantum number ml, the direction of the orbital, can be -l to l. And finally, the quantum number ms refers to the orbital's upward and downward spin represented by -1/2 or 1/2.
5. What is the molality of a solution consisting of 0.359 moles of solute and 50g of solvent?

Answer: 7.18m

The molality of a solution can be found by dividing the number of moles of solute by the mass of the solvent in kilograms when converted from grams. The answer is typically rounded to three significant figures.
6. Brass is an alloy consisting of what two metals?

Answer: Zinc and Copper

Brass is an alloy (metallic solution) of zinc and copper. It is used to make rings and knuckles. It is also used to make musical instruments such as trumpets, tubas, and other members of the horn family.
7. The formula for sucrose is C12H22O11. What is the oxidation number of carbon in this formula?

Answer: 0

Oxygen has an oxidation number of -2, and hydrogen has an oxidation number of 1. The chemical formula becomes an equation that equals to 0, and the number of atoms are multiplied by the corresponding oxidation numbers. Then the unknown oxidation number of an element is found by solving the equation.

Here, we have the formula of sucrose C12H22O11. The oxidation numbers of hydrogen and oxygen yield the equation 12C*+1*22-2*11=0 which becomes 12C+22-22=0. The 22s cancel out, leaving 12C=0. When you divide by 12, you get the oxidation number of carbon, which is (obviously) 0.
8. If an aqueous solution has a pH of 13.6, then it is which of these?

Answer: basic

A pH between 1-6.9 is acidic, a pH of 7 is neutral, and a pH between 7.01-14 is basic. A pH of 13.6 is between 7.01 and 14, so the solution is basic.
9. What intermolecular forces occur when a polar molecule interacts with a nonpolar molecule?

Answer: dipole-induced dipole

Water, a polar molecule, interacting with carbon dioxide, a nonpolar molecule, is an example of a dipole-induced dipole occurring. This typically happens during photosynthesis as shown in the equation 6CO2+6H2O->C6H12O6+6O2.
10. What phase change occurs when water becomes steam?

Answer: vaporization

Vaporization is where a liquid changes to a gas, usually upon heating. Sublimation refers to when a solid changes to a gas (e.g. dry ice becoming carbon dioxide). Deposition occurs when a gas becomes a solid and condensation happens when a gas becomes a liquid (both typically occurring within the atmosphere).
Source: Author ebanks120

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