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Elements and the Periodic Table Video Lecture | IGCSE Cambridge Science for Year 6 - Class 6

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FAQs on Elements and the Periodic Table Video Lecture - IGCSE Cambridge Science for Year 6 - Class 6

1. What are elements in the periodic table?
Ans. Elements in the periodic table are substances that cannot be broken down into simpler substances by chemical means. They are represented by unique symbols and organized based on their properties in the periodic table.
2. How many elements are there in the periodic table?
Ans. There are 118 known elements in the periodic table, with the first 94 occurring naturally on Earth. The remaining elements are synthetic and have been created in laboratories.
3. What is the significance of the periodic table?
Ans. The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties. It helps scientists predict the behavior of elements and discover new ones.
4. What are groups and periods in the periodic table?
Ans. Groups in the periodic table are vertical columns that contain elements with similar properties. Periods are horizontal rows that show the gradual change in properties of elements from left to right.
5. How are elements named and identified in the periodic table?
Ans. Elements are named using a unique symbol, usually derived from their Latin name. They are identified by their atomic number, which determines their placement in the periodic table based on the number of protons in their nucleus.
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