Convection

Front

Matter Noun

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[mat-er]

Back

Matter

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The scientific term for the physical substance or 'stuff' that all objects are made of and which occupies space.

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Example: The image shows how matter exists as solids, liquids, and gases, with molecules packed differently in each state.

Front

Atom Noun

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[at-uhm]

Back

Atom

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The smallest, most basic unit of a chemical element, which are the fundamental particles that constitute all matter.

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Example: Shows an atom with labeled protons, neutrons, and electrons, explaining its basic structure.

Front

Mass Noun

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[mas]

Back

Mass

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A measure of the amount of matter contained within a physical body, commonly measured in units like grams.

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Example: A balance scale shows a feather and a rock, illustrating mass differences.

Front

Volume Noun

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[vol-yoom]

Back

Volume

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The quantity of three-dimensional space enclosed by a closed surface or occupied by a substance, solid, liquid, or gas.

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Example: The image shows how to read liquid volume using the meniscus in a graduated cylinder.

Front

Density Noun

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[den-si-tee]

Back

Density

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The measurement of how much mass is packed into a certain volume of a substance, calculated as mass per volume.

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Example: The image shows how to calculate density using mass and volume measurements.

Front

Gram Noun

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[gram]

Back

Gram

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A metric unit of mass, equal to one-thousandth of a kilogram, commonly used to measure the mass of objects.

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Example: A digital scale displays weight in grams, showing how mass is measured.

Front

Milliliter Noun

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[mil-i-lee-ter]

Back

Milliliter

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A metric unit of volume, equal to one-thousandth of a liter, commonly used for measuring the volume of liquids.

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Example: A measuring cup with milliliter markings shows how to measure liquid volume in the metric system.

Front

Cubic Centimeter Noun

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[kyoo-bik sen-ti-mee-ter]

Back

Cubic Centimeter

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A metric unit of volume equal to a cube with one-centimeter sides, commonly used for measuring solid and gas volumes.

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Example: A measuring cup labeled in cubic centimeters shows how volume is measured.

Front

Kinetic Energy Noun

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

Back

Kinetic Energy

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The energy that a body or particle possesses by virtue of being in motion, which increases with temperature.

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Example: A moving car has kinetic energy due to its mass and speed, shown with labels and formula.

Front

Expansion Noun

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[ik-span-shuhn]

Back

Expansion

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The increase in the volume of a substance in response to a change in its temperature or pressure.

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Example: As temperature increases, particles in a solid spread out, showing expansion.