Kinetic Energy

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Matter Noun

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[mat-er]

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Matter

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Anything that is made of particles, has mass, and occupies space, existing in states like solid, liquid, or gas.

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Example: This image shows how particles are arranged differently in solids, liquids, and gases, explaining the states of matter.

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Particles Noun

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[par-ti-kuls]

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Particles

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The extremely small units, such as atoms or molecules, that all matter is composed of and are constantly in motion.

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Example: The image shows an atom's structure, explaining particles like electrons, protons, and neutrons.

Front

Model Noun

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[mod-l]

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Model

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A representation used to help understand complex ideas or things that cannot be seen directly, like the arrangement of particles.

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Example: The image shows how particles are arranged in solids, liquids, and gases, modeling their different states.

Front

Gas Noun

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[gas]

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Gas

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A state of matter in which particles are not bonded and move freely and rapidly to fill any available space.

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Example: Shows different gases like air and helium, explaining how gases have no fixed shape or volume.

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Mass Noun

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[mas]

Back

Mass

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The measure of the amount of matter, or the number of particles, contained within a physical body or substance.

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Example: A balance scale shows a feather and a rock, illustrating mass by comparing the amount of matter in each.

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Mixture Noun

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[mix-cher]

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Mixture

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A substance made of two or more different components, like the gases in air, that are not chemically bonded together.

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Example: Different colored balls in a beaker show a mixture of substances not chemically bonded.

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Density Noun

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[den-si-tee]

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Density

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The measure of how many particles are packed into a certain amount of space, calculated as mass per unit volume.

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Example: Objects with different densities float or sink in water, showing how density affects buoyancy.

Front

Kinetic Energy Noun

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[ki-net-ik en-er-jee]

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Kinetic Energy

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The energy that an object or particle possesses due to its motion, which increases with its speed and mass.

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Example: A cyclist gains kinetic energy while descending a hill due to increased speed.

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Speed Noun

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[speed]

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Speed

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The rate at which an object or particle is moving, which directly affects the amount of its kinetic energy.

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Example: A car moving along a road shows how speed is calculated using distance and time.

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Expansion Noun

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[ek-span-shun]

Back

Expansion

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The increase in the volume of matter that occurs when its particles are heated, gain kinetic energy, and move farther apart.

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Example: Particles in a solid spread out as temperature increases, showing expansion.