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Questions and Answers
What is an element?
What is an element?
- A substance that can be broken into other substances
- A substance that cannot be broken into other substances (correct)
- A compound made out of atoms
- A type of particle that is man-made
How many elements are there on the periodic table?
How many elements are there on the periodic table?
- 15
- 118 (correct)
- 50
- 92
What do chemists use to represent elements?
What do chemists use to represent elements?
- Phrases
- Symbols (correct)
- Letters
- Numbers
Which element is commonly used in making car batteries?
Which element is commonly used in making car batteries?
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Who was one of the creators of the periodic table?
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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