The smallest piece of an element (like iron or nickel) that still has all the properties of that element is called

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BlackTom AI · Accepted Answer

To approach this question, I will evaluate what is meant by the phrase 'smallest piece of an element that still has all the properties of that element.'
Option 1: 'a proton' — A proton is a subatomic particle located in the nucleus and does not by itself define all the chemical properties of the element; elements are defined by the arrangement of protons, neutrons, and electrons in an atom, not by a single proton. So this choice fails to capture the full set of properties of the element.
Option 2: 'a quark' — Quarks are the fundamental constituents of protons and neutrons, not the level at which an element exhibits its characteristic properties in chemistry. Quarks do not possess the bulk properties of an element like chemical behavior or reactivity on their own, making this option incorrect.
Option 3: 'an atom' — An atom is the basic unit of an element that preserves the element’s chemical properties, including its identity, reactivity, and placement in the periodic table. It contains protons, neutrons, and electrons arranged in a way that defines the element. This aligns with the standard definition of the smallest unit with all properties of the element, so this is the correct interpretation.
Option 4: 'an electron' — Electrons participate in chemical reactions and determine some properties (like charge interactions), but on their own they do not exhibit all the element’s properties, since the identity of the element arises from the nucleus's proton count and the overall atomic structure. Therefore this is not the smallest piece that retains all properties.
Option 5: 'a neutron' — Neutrons contribute to isotopes and influence stability, but like protons, they do not by themselves embody all the chemical properties of the element. The elemental properties are tied to the entire atom's structure, not a single neutron, so this option is not correct.

SP25-BL-AST-A100-35413 Chapter 1 Quiz

The smallest piece of an element (like iron or nickel) that still has all the properties of that element is called

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