Completed Periodic Table Scavenger Hunt worksheet featuring 20 chemistry questions and their correct answers highlighted in red.
Periodic Table Scavenger Hunt worksheet with 20 chemistry questions and red answer key.
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Step-by-step solution for: Answer key to the Periodic Table Scavenger Hunt Worksheet. Related ...
The image you've uploaded is a completed "Periodic Table Scavenger Hunt" worksheet with answers filled in. Below, I will go through each question, verify the correctness of the provided answers, and explain the reasoning behind each one based on the periodic table.
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Answer: Silicon
- Explanation: The atomic number (number of protons) identifies an element. Element 14 is Silicon (Si).
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Answer: Cf
- Explanation: Californium is a synthetic element with the symbol Cf (from its name, California).
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Answer: 83
- Explanation: Bismuth has an atomic number of 83, meaning it has 83 protons.
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Answer: Noble Gas
- Explanation: Argon (Ar) is in Group 18 of the periodic table, known as the noble gases, which are chemically inert.
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Answer: Cadmium
- Explanation: Atomic mass increases across a period and down a group. Cadmium (Cd) is below zinc (Zn) in Group 12, so it has a higher atomic mass (~112.4 vs ~65.4).
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Answer: 12.01
- Explanation: Carbon's average atomic mass is 12.01 u, due to isotopes like C-12 and C-13.
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Answer: Lanthanides
- Explanation: Elements 57 (La) to 71 (Lu) are called the lanthanides, often placed in a separate row below the main table.
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Answer: Gold
- Explanation:
- Aluminum → Al (A matches)
- Copper → Cu (C matches)
- Gold → Au (A ≠ G — starts with 'A', not 'G')
- Rhenium → Re (R matches)
- So gold is correct.
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Answer: Hydrogen
- Explanation: Hydrogen (H) has the smallest atomic mass (~1.008 u), making it the lightest element.
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Answer: Ruthenium
- Explanation: Let’s check:
- Rhodium (Rh): ~102.9
- But Ruthenium (Ru) has atomic mass ~101.07 — yes, it's the first element over 100.
- (Note: Technically, ruthenium is atomic number 44, and its mass is just over 100.)
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Answer: Aluminum
- Explanation: This refers to metals that are not alkali or alkaline earth metals but still form basic oxides. The first such metal after alkali/alkaline earth is Aluminum (Al), which forms a basic oxide (Al₂O₃). However, note that this may be interpreted differently depending on definition — some might argue lithium or sodium are first "basic" metals. But since "basic metal" likely means post-transition metal, aluminum is a reasonable answer.
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Answer: False
- Explanation:
- Tin (Sn) is in Group 14
- Antimony (Sb) is in Group 15
- So they are not in the same group.
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Answer: Francium
- Explanation: Alkali metals are in Group 1: Li, Na, K, Rb, Cs, Fr. Francium (Fr) is the last and heaviest (atomic number 87).
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Answer: 12
- Explanation: Magnesium (Mg) has atomic number 12, so it has 12 protons.
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Answer: Silicon
- Explanation: Sulfur, oxygen, and nitrogen are nonmetals. Silicon is a metalloid (semi-metal), so it is not a nonmetal.
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Answer: Tungsten
- Explanation: W comes from *wolfram*, the German name for tungsten. Its symbol is W.
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Answer: Palladium
- Explanation: Palladium (Pd) has an atomic mass of approximately 106.42 u.
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Answer: Halogen
- Explanation: Astatine (At) is in Group 17, the halogens, along with fluorine, chlorine, etc.
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Answer: Barium
- Explanation: Ba is the chemical symbol for Barium, atomic number 56.
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Answer: J or Q
- Explanation: The letters J and Q are not used in any official chemical symbol. For example:
- No element has a symbol starting with J or Q.
- All symbols use either one or two letters, and J and Q are unused.
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All answers provided on the worksheet are correct based on standard periodic table knowledge.
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- This worksheet is designed to help students become familiar with the periodic table by locating elements, understanding groups, atomic numbers, masses, and naming conventions.
- It covers basic chemistry concepts: atomic number, symbol, group classification, trends, and exceptions.
Let me know if you'd like this turned into a printable PDF or need a version without answers!
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✔ 1. Which element is number 14 on the periodic table?
Answer: Silicon
- Explanation: The atomic number (number of protons) identifies an element. Element 14 is Silicon (Si).
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✔ 2. What is the element symbol for californium?
Answer: Cf
- Explanation: Californium is a synthetic element with the symbol Cf (from its name, California).
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✔ 3. How many protons are in an atom of bismuth?
Answer: 83
- Explanation: Bismuth has an atomic number of 83, meaning it has 83 protons.
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✔ 4. To which element group does argon belong?
Answer: Noble Gas
- Explanation: Argon (Ar) is in Group 18 of the periodic table, known as the noble gases, which are chemically inert.
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✔ 5. Which element would you expect to have a higher mass: cadmium or zinc?
Answer: Cadmium
- Explanation: Atomic mass increases across a period and down a group. Cadmium (Cd) is below zinc (Zn) in Group 12, so it has a higher atomic mass (~112.4 vs ~65.4).
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✔ 6. What is the atomic mass of carbon?
Answer: 12.01
- Explanation: Carbon's average atomic mass is 12.01 u, due to isotopes like C-12 and C-13.
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✔ 7. What do you call the element series from atomic number 57–71?
Answer: Lanthanides
- Explanation: Elements 57 (La) to 71 (Lu) are called the lanthanides, often placed in a separate row below the main table.
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✔ 8. Which element has a symbol that starts with a letter different from the first one in its name: aluminum, copper, gold, rhenium?
Answer: Gold
- Explanation:
- Aluminum → Al (A matches)
- Copper → Cu (C matches)
- Gold → Au (A ≠ G — starts with 'A', not 'G')
- Rhenium → Re (R matches)
- So gold is correct.
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✔ 9. Which element has the lowest atomic mass?
Answer: Hydrogen
- Explanation: Hydrogen (H) has the smallest atomic mass (~1.008 u), making it the lightest element.
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✔ 10. What is the first element with an atomic mass greater than 100?
Answer: Ruthenium
- Explanation: Let’s check:
- Rhodium (Rh): ~102.9
- But Ruthenium (Ru) has atomic mass ~101.07 — yes, it's the first element over 100.
- (Note: Technically, ruthenium is atomic number 44, and its mass is just over 100.)
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✔ 11. What is the first basic metal on the periodic table?
Answer: Aluminum
- Explanation: This refers to metals that are not alkali or alkaline earth metals but still form basic oxides. The first such metal after alkali/alkaline earth is Aluminum (Al), which forms a basic oxide (Al₂O₃). However, note that this may be interpreted differently depending on definition — some might argue lithium or sodium are first "basic" metals. But since "basic metal" likely means post-transition metal, aluminum is a reasonable answer.
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✔ 12. True or false: Tin and antimony are in the same element group.
Answer: False
- Explanation:
- Tin (Sn) is in Group 14
- Antimony (Sb) is in Group 15
- So they are not in the same group.
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✔ 13. What is the heaviest alkali metal?
Answer: Francium
- Explanation: Alkali metals are in Group 1: Li, Na, K, Rb, Cs, Fr. Francium (Fr) is the last and heaviest (atomic number 87).
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✔ 14. How many protons are in an atom of magnesium?
Answer: 12
- Explanation: Magnesium (Mg) has atomic number 12, so it has 12 protons.
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✔ 15. Which of the following is not a nonmetal: sulfur, oxygen, silicon, nitrogen?
Answer: Silicon
- Explanation: Sulfur, oxygen, and nitrogen are nonmetals. Silicon is a metalloid (semi-metal), so it is not a nonmetal.
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✔ 16. What is the name of the element with the symbol W?
Answer: Tungsten
- Explanation: W comes from *wolfram*, the German name for tungsten. Its symbol is W.
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✔ 17. Which element has an atomic mass of 106.42?
Answer: Palladium
- Explanation: Palladium (Pd) has an atomic mass of approximately 106.42 u.
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✔ 18. Astatine belongs to which element group: nonmetal, halogen, noble gas?
Answer: Halogen
- Explanation: Astatine (At) is in Group 17, the halogens, along with fluorine, chlorine, etc.
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✔ 19. What is the element with the symbol Ba?
Answer: Barium
- Explanation: Ba is the chemical symbol for Barium, atomic number 56.
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✔ 20. Name a letter never used in any element symbol?
Answer: J or Q
- Explanation: The letters J and Q are not used in any official chemical symbol. For example:
- No element has a symbol starting with J or Q.
- All symbols use either one or two letters, and J and Q are unused.
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✔ Final Summary:
All answers provided on the worksheet are correct based on standard periodic table knowledge.
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📌 Additional Notes:
- This worksheet is designed to help students become familiar with the periodic table by locating elements, understanding groups, atomic numbers, masses, and naming conventions.
- It covers basic chemistry concepts: atomic number, symbol, group classification, trends, and exceptions.
Let me know if you'd like this turned into a printable PDF or need a version without answers!
Parent Tip: Review the logic above to help your child master the concept of periodic table worksheet answers.
