Physical Science Final Exam Practice

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A negatively charged subatomic particle.

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Electron: A fundamental particle with a negative charge, found in all atoms.

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A compound that produces hydroxide ions when dissolved in water; a proton acceptor.

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Base: A substance that can accept protons (H+) or donate electron pairs in reactions.

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The ratio of a material's mass to its volume.

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Density: A physical property defined as mass per unit volume, often expressed in g/cm³.

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A mirror that is curved inward.

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Concave Mirror: A mirror that curves inward, causing light rays to converge.

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A mirror that is curved outward.

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Convex Mirror: A mirror that bulges outward, causing light rays to diverge.

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The smallest unit of an element that retains the properties of that element.

Back

Atom: The basic building block of matter, consisting of protons, neutrons, and electrons.

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A substance that increases the concentration of hydrogen ions (H+) in a solution.

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Acid: A chemical substance that donates protons or accepts electron pairs.

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The force of attraction between two objects due to their mass.

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Gravity: A natural phenomenon by which all things with mass are brought toward one another.

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The change of state from a gas to a liquid.

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Condensation: The process by which gas turns into liquid, often due to cooling.

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The measure of the average kinetic energy of the particles in a substance.

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Temperature: A physical quantity that expresses hot and cold, measured in degrees.