Multiple Choice
How many elements are naturally occurring on Earth?
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2. Atoms & Elements
Periodic Table: Elemental Forms
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Which of the following best describes synthetic elements?
A
Elements that exist only as gases at room temperature.
B
Elements that are formed by the combination of two or more elements in a chemical reaction.
C
Elements that are artificially produced in laboratories and do not occur naturally on Earth.
D
Elements that are found in nature in their pure, uncombined form.
Verified step by step guidance1
Understand the term 'synthetic elements' in the context of chemistry. Synthetic elements are those that are not found naturally on Earth and must be created artificially.
Recall that elements can be classified based on their origin: naturally occurring elements exist in nature, while synthetic elements are produced in laboratories through nuclear reactions.
Recognize that synthetic elements are typically created by bombarding target atoms with particles in particle accelerators or nuclear reactors, resulting in new elements with higher atomic numbers.
Eliminate options that describe physical states (like gases at room temperature) or chemical combinations (compounds formed by two or more elements), as these do not define synthetic elements.
Conclude that the best description of synthetic elements is that they are artificially produced in laboratories and do not occur naturally on Earth.
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