Questions and Answers
What is an element?
A substance that cannot be broken into other substances
How many elements are there on the periodic table?
118
What do chemists use to represent elements?
Symbols
Which element is commonly used in making car batteries?
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Who was one of the creators of the periodic table?
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Study Notes
Elements and Substances
- A substance is a type of matter that cannot be broken down into simpler substances.
- Elements are the simplest form of substances, made up of atoms.
Examples of Elements
- Mercury is an element used in electrical equipment.
- Gold is an element used in jewelry.
- Carbon is an element used in smelting, making alloys, and making car batteries.
- Sulfur is an element used in making car batteries.
The Periodic Table
- The periodic table is a tabular arrangement of 118 known elements, but only 92 are found on Earth's surface.
- Chemists use symbols to represent elements, typically consisting of 1-2 letters.
- The periodic table was developed by John, Dolden, and Dimitri Mendeleev.
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