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Questions and Answers
What is the definition of a chemical element?
What is the definition of a chemical element?
- A collection of atoms that have the same number of electrons in their nucleus
- A collection of atoms that have the same atomic mass
- A collection of atoms that have the same number of protons in their nucleus (correct)
- A collection of atoms that have the same number of neutrons in their nucleus
How are the elements arranged in the Periodic Table?
How are the elements arranged in the Periodic Table?
- In periods (rows) and groups (columns) based on their atomic number (correct)
- In alphabetical order by their chemical symbol
- In random order with no specific pattern
- In order of increasing atomic mass
What is the number of protons in an atom's nucleus known as?
What is the number of protons in an atom's nucleus known as?
- Atomic Number (correct)
- Electron Number
- Proton Number
- Atomic Mass
Where are the metals located in the Periodic Table?
Where are the metals located in the Periodic Table?
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How many chemical elements are compiled in the Periodic Table of elements?
How many chemical elements are compiled in the Periodic Table of elements?
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What did Dmitri Mendeleev use to observe periodic trends and similarities in grouping elements?
What did Dmitri Mendeleev use to observe periodic trends and similarities in grouping elements?
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What type of change involves the breaking and forming of bonds, resulting in a transfer of energy?
What type of change involves the breaking and forming of bonds, resulting in a transfer of energy?
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What do elements in the same group of the Periodic Table possess?
What do elements in the same group of the Periodic Table possess?
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What is the term for a substance that speeds up the rate of a chemical reaction?
What is the term for a substance that speeds up the rate of a chemical reaction?
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What is the term for a chemical reaction that releases energy?
What is the term for a chemical reaction that releases energy?
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