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Quiz about Chemistry 101 Elements and Compounds

Chemistry 101: Elements and Compounds Quiz

Here is a quiz on chemistry.

A multiple-choice quiz by Ken1260. Estimated time: 3 mins.

Author
Ken1260

Time
3 mins

Type
Multiple Choice

Quiz #
340

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
8 / 10

Plays
17420

Awards
Top 35% Quiz

Last 3 plays: Guest 97 (7/10), Guest 209 (8/10), Guest 96 (8/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Which of the following gases would you find in a soft drink? Hint

H2SO4

HCl

CO2

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Question 2 of 10

2. What is the chemical symbol for the element mercury? Hint

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Question 3 of 10

3. Nitrous oxide is also known as what? Hint

Rotten egg gas

Hot air balloon gas

Smelly gas

Laughing gas

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Question 4 of 10

4. Which element is most abundant in the air that we breathe? Hint

Oxygen

Helium

Hydrogen

Nitrogen

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Question 5 of 10

5. Which of the following compounds would you most likely drink? Hint

HCl

H2O

H2SO4

H2O2

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Question 6 of 10

6. Which of the following would you most likely sprinkle on your food? Hint

KCl

NaOH

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Question 7 of 10

7. Which of the following is the symbol for gold? Hint

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Question 8 of 10

8. Which of the following is ozone? Hint

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Question 9 of 10

9. Which of the following is the closest to the atomic weight of hydrogen? Hint

2.0079

10.0079

3.0079

1.0079

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Question 10 of 10

10. Which one of the following is the formula for baking soda? Hint

HCl

Na2CO3

NaHCO3

NaOH

Most Recent Scores

Dec 19 2024 : Guest 97: 7/10
Dec 17 2024 : Guest 209: 8/10
Dec 13 2024 : Guest 96: 8/10
Dec 08 2024 : Kalibre: 4/10
Dec 06 2024 : Guest 49: 9/10
Dec 05 2024 : genoveva: 9/10
Dec 03 2024 : RJOhio: 8/10
Dec 01 2024 : Guest 80: 0/10
Nov 26 2024 : Mookie325: 9/10

Score Distribution

Quiz Answer Key and Fun Facts

1. Which of the following gases would you find in a soft drink?

Answer: CO2

CO2 is carbon dioxide which is added to soft drinks to make them fizzy.

2. What is the chemical symbol for the element mercury?

Answer: Hg

Mercury is an unusual element in that it is one of only two elements to occur as a liquid at room temperature (25 degrees C). The other element to fall under this category is bromine.

3. Nitrous oxide is also known as what?

Answer: Laughing gas

Nitrous oxide, formula N2O, used to be used in dentistry as an anaesthetic. Its nickname came from the fact that laughter is a common side-effect of inhaling it.

4. Which element is most abundant in the air that we breathe?

Answer: Nitrogen

The earth's atmosphere is made up of 78% nitrogen, N2. Oxygen is the next most abundant gas in the atmosphere, at over 20%.

5. Which of the following compounds would you most likely drink?

Answer: H2O

H2O is just water. HCl is hydrogen chloride, which when dissolved in water is known as hydrochloric acid; H2SO4 is sulphuric acid and H2O2 is hydrogen peroxide, none of which would be good to drink!

6. Which of the following would you most likely sprinkle on your food?

Answer: KCl

KCl is salt substitute for those people on sodium free diets. NaOH is sodium hydroxide, a strong base that causes burns. HF is hydrofluoric acid and Mg is the element magnesium.

7. Which of the following is the symbol for gold?

Answer: Au

The chemical symbol for the element gold is taken from the Latin word "aurum", which means "gold". Ag is the symbol for the element silver.

8. Which of the following is ozone?

Answer: O3

Ozone is what shields the earth from damaging ultraviolet rays from the sun. Ozone is another form of the element oxygen, whose most stable form is O2.

9. Which of the following is the closest to the atomic weight of hydrogen?

Answer: 1.0079

Hydrogen is the lightest of all the elements and has the atomic number 1.

10. Which one of the following is the formula for baking soda?

Answer: NaHCO3

Baking soda's chemical name is sodium bicarbonate (or sodium hydrogen carbonate). Na2CO3 is sodium carbonate (which is different from baking soda!), NaOH is sodium hydroxide and HCl is hydrogen chloride.

Source: Author Ken1260

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