Level 4 Vocabulary

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The negatively charged particle that is outside the nucleus of an atom.

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Electron: A subatomic particle with a negative charge, found in the electron cloud surrounding the nucleus of an atom.

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The process in which 2 atomic nuclei combine to form a larger nucleus, forming a heavier element and the release of huge amounts of energy.

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Nuclear Fusion: A reaction in which two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process.

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Materials that can be pounded into shapes.

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Malleable: A property of materials that allows them to be shaped or deformed under compressive stress.

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The ease & speed with which an element combines, or reacts, with other elements & compounds.

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Reactivity: A measure of how readily a substance undergoes a chemical reaction.

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An element in Group 2 of the periodic table.

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Alkaline Earth Metal: Elements in Group 2, known for being reactive and forming basic oxides.

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The positively charged particle found in the nucleus of an atom.

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Proton: A subatomic particle with a positive charge, located in the nucleus of an atom.

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The neutral particle found in the nucleus of an atom.

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Neutron: A subatomic particle with no charge, found in the nucleus alongside protons.

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The table that organizes all known elements based on their properties and atomic number.

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Periodic Table: A tabular arrangement of the chemical elements, organized by increasing atomic number.

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The ability of a material to be drawn into wires.

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Ductile: A property of materials that allows them to be stretched into thin wires without breaking.

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The measure of how well a substance conducts electricity.

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Conductivity: The ability of a material to allow the flow of electric current.