History of the Periodic Table_Video Notes - Free Printable
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Step-by-step solution for: History of the Periodic Table_Video Notes
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Step-by-step solution for: History of the Periodic Table_Video Notes
Based on the worksheet titled *"Solving the Puzzle of the Periodic Table"* and typical content from educational videos about the history of the periodic table (especially the one linked: https://youtu.be/O-48znAg7VE), here are the answers to each question, along with explanations.
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1. What might be the greatest gift to science?
Answer: The periodic table
Explanation: The periodic table is considered one of the most significant achievements in chemistry because it organizes all known elements in a way that reveals patterns in their properties, allowing scientists to predict the behavior of elements and discover new ones.
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2. Hennig Brand, a German alchemist, boiled down his own _________ trying to extract what element? ________
Answer: Urine; Phosphorus
Explanation: In the 17th century, Hennig Brand attempted to create the philosopher’s stone by boiling down urine. Instead, he discovered phosphorus, a glowing element, which was the first element to be isolated through chemical means.
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3. What element did he actually extract?
Answer: Phosphorus
Explanation: As mentioned above, Brand's experiment resulted in the discovery of phosphorus, named for its "light-bearing" property due to its glow in the dark.
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4. The Greek “periodic table” claimed objects were composed of: ________________________.
Answer: Four elements: Earth, Water, Air, and Fire
Explanation: Ancient Greek philosophers like Empedocles believed that all matter was made up of four fundamental elements: earth, water, air, and fire. This was not a true periodic table but an early attempt to classify matter.
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5. Antoine Lavoisier is now known as the father of chemistry. He defined an _________ as a substance that could _________________.
Answer: Element; not be broken down into simpler substances by chemical means
Explanation: Lavoisier helped define the concept of a chemical element as a pure substance that cannot be decomposed into simpler substances using chemical reactions. This laid the foundation for modern chemistry.
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6. Lavoisier created a list of the known elements of his time and tried to put the elements ________________________.
Answer: Into groups based on their properties
Explanation: Lavoisier grouped elements according to similarities in behavior, such as metals and nonmetals, marking an early step toward organizing the elements systematically.
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7. John Dalton weighed the elements and arranged them by ________________________.
Answer: Atomic mass
Explanation: John Dalton proposed the atomic theory and arranged elements by increasing atomic mass, which was a major advancement in understanding elemental relationships.
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8. German chemist, Wolfgang Döbereiner found that certain elements shared ________________________.
Answer: Similar chemical properties and formed triads
Explanation: Döbereiner noticed that when elements were arranged by atomic mass, every third element had similar properties—this became known as the law of triads.
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9. When pure elements of Li, Na and K are exposed to water they will ________ and skid across the water with ________________.
Answer: React violently; sparks or flames
Explanation: Lithium (Li), sodium (Na), and potassium (K) are alkali metals. They react vigorously with water, producing hydrogen gas and heat, causing them to melt, move rapidly, and often ignite with sparks or flames.
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10. Elements belong to ________________ that share similar properties.
Answer: Groups or families
Explanation: Elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons.
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11. The chemist who finally put the pieces together was ________________________.
Answer: Dmitri Mendeleev
Explanation: Mendeleev created the first widely accepted periodic table by arranging elements by atomic mass and leaving gaps for undiscovered elements, predicting their properties accurately.
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12. The story goes that Mendeleev __________________________ about a table to order the elements.
Answer: Dreamed
Explanation: According to legend, Mendeleev had a dream in which the elements arranged themselves into a table, helping him finalize his periodic system.
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1. The periodic table
2. Urine; Phosphorus
3. Phosphorus
4. Earth, Water, Air, and Fire
5. Element; not be broken down into simpler substances by chemical means
6. Into groups based on their properties
7. Atomic mass
8. Similar chemical properties and formed triads
9. React violently; sparks or flames
10. Groups or families
11. Dmitri Mendeleev
12. Dreamed
These answers align with common historical accounts and educational content typically covered in videos explaining the development of the periodic table.
---
1. What might be the greatest gift to science?
Answer: The periodic table
Explanation: The periodic table is considered one of the most significant achievements in chemistry because it organizes all known elements in a way that reveals patterns in their properties, allowing scientists to predict the behavior of elements and discover new ones.
---
2. Hennig Brand, a German alchemist, boiled down his own _________ trying to extract what element? ________
Answer: Urine; Phosphorus
Explanation: In the 17th century, Hennig Brand attempted to create the philosopher’s stone by boiling down urine. Instead, he discovered phosphorus, a glowing element, which was the first element to be isolated through chemical means.
---
3. What element did he actually extract?
Answer: Phosphorus
Explanation: As mentioned above, Brand's experiment resulted in the discovery of phosphorus, named for its "light-bearing" property due to its glow in the dark.
---
4. The Greek “periodic table” claimed objects were composed of: ________________________.
Answer: Four elements: Earth, Water, Air, and Fire
Explanation: Ancient Greek philosophers like Empedocles believed that all matter was made up of four fundamental elements: earth, water, air, and fire. This was not a true periodic table but an early attempt to classify matter.
---
5. Antoine Lavoisier is now known as the father of chemistry. He defined an _________ as a substance that could _________________.
Answer: Element; not be broken down into simpler substances by chemical means
Explanation: Lavoisier helped define the concept of a chemical element as a pure substance that cannot be decomposed into simpler substances using chemical reactions. This laid the foundation for modern chemistry.
---
6. Lavoisier created a list of the known elements of his time and tried to put the elements ________________________.
Answer: Into groups based on their properties
Explanation: Lavoisier grouped elements according to similarities in behavior, such as metals and nonmetals, marking an early step toward organizing the elements systematically.
---
7. John Dalton weighed the elements and arranged them by ________________________.
Answer: Atomic mass
Explanation: John Dalton proposed the atomic theory and arranged elements by increasing atomic mass, which was a major advancement in understanding elemental relationships.
---
8. German chemist, Wolfgang Döbereiner found that certain elements shared ________________________.
Answer: Similar chemical properties and formed triads
Explanation: Döbereiner noticed that when elements were arranged by atomic mass, every third element had similar properties—this became known as the law of triads.
---
9. When pure elements of Li, Na and K are exposed to water they will ________ and skid across the water with ________________.
Answer: React violently; sparks or flames
Explanation: Lithium (Li), sodium (Na), and potassium (K) are alkali metals. They react vigorously with water, producing hydrogen gas and heat, causing them to melt, move rapidly, and often ignite with sparks or flames.
---
10. Elements belong to ________________ that share similar properties.
Answer: Groups or families
Explanation: Elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons.
---
11. The chemist who finally put the pieces together was ________________________.
Answer: Dmitri Mendeleev
Explanation: Mendeleev created the first widely accepted periodic table by arranging elements by atomic mass and leaving gaps for undiscovered elements, predicting their properties accurately.
---
12. The story goes that Mendeleev __________________________ about a table to order the elements.
Answer: Dreamed
Explanation: According to legend, Mendeleev had a dream in which the elements arranged themselves into a table, helping him finalize his periodic system.
---
Final Answer Summary:
1. The periodic table
2. Urine; Phosphorus
3. Phosphorus
4. Earth, Water, Air, and Fire
5. Element; not be broken down into simpler substances by chemical means
6. Into groups based on their properties
7. Atomic mass
8. Similar chemical properties and formed triads
9. React violently; sparks or flames
10. Groups or families
11. Dmitri Mendeleev
12. Dreamed
These answers align with common historical accounts and educational content typically covered in videos explaining the development of the periodic table.
Parent Tip: Review the logic above to help your child master the concept of history of the periodic table worksheet.
