BackPeriodic Table: Phases (Simplified) definitions
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1/15BackSkip to main contentBackStandard Room Temperature
A reference point of 25 degrees Celsius used to compare properties of elements under typical laboratory conditions. Standard Pressure
A reference point of 1 atmosphere, commonly used to describe the behavior of elements in a controlled environment. Solid
A state where molecules are locked in place, maintaining fixed shape and volume, and not conforming to their container. Liquid
A state where molecules are close but can move freely, allowing adaptation to container shape but not volume. Gas
A state with widely spaced molecules, enabling both shape and volume of the container to be assumed. Periodic Table
A systematic arrangement of elements, highlighting their states at standard temperature and pressure. Noble Gases
A group in the periodic table, all existing as gases at standard conditions, found in group 8A. Synthetic Elements
Laboratory-created substances, typically found in the 7th row, with unpredictable states due to instability. State of Matter
A physical form—solid, liquid, or gas—adopted by elements depending on temperature and pressure. Volume
The amount of three-dimensional space occupied, which solids and gases maintain or assume in a container. Shape
A property retained by solids, adapted by liquids, and assumed by gases based on their molecular arrangement. Molecule
A group of atoms whose arrangement and movement determine the state—solid, liquid, or gas—of a substance. Unstable Element
A substance with high atomic mass, often synthetic, whose state at standard conditions cannot be reliably predicted. Container
An object whose shape and volume influence how solids, liquids, and gases behave within it. 7th Row
A section of the periodic table containing synthetic, highly unstable elements with unpredictable physical states.
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