MS-PS1-2: Chemical Interactions

Front

Freeze Verb

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[freez]

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Freeze

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The process of a substance changing its phase from a liquid to a solid state at a specific temperature.

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Example: The image shows a liquid turning into a solid, illustrating the freezing process.

Front

Melting Noun

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[melt-ing]

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Melting

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The process of a substance changing its phase from a solid to a liquid state when heat is applied.

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Example: Shows how a solid changes to a liquid through melting with clear labels and an arrow.

Front

Freezing Point Noun

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[freez-ing point]

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Freezing Point

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The specific temperature at which a liquid substance turns into a solid when it is cooled down.

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Example: The image shows water freezing at 0°C (32°F) with thermometers and ice cubes, illustrating the freezing point.

Front

Melting Point Noun

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[melt-ing point]

Back

Melting Point

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The specific temperature at which a solid substance turns into a liquid, which is the same as its freezing point.

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Example: The image shows ice melting into water at 0°C, explaining the melting point concept.

Front

Evaporation Noun

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[i-vap-uh-rey-shuhn]

Back

Evaporation

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The process where a substance in a liquid state changes to a gaseous state, such as water turning into steam.

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Example: Water heats on a stove, turning into steam, showing evaporation.

Front

Condensation Noun

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[kon-den-sey-shuhn]

Back

Condensation

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The process where a substance in a gaseous state changes to a liquid state when it is cooled down.

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Example: Warm moist air hits a cold surface, turning into liquid water.

Front

Phase Noun

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[feyz]

Back

Phase

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A distinct form of matter, such as a solid, liquid, or gas, determined by the arrangement of its particles.

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Example: The image shows solid, liquid, and gas phases with particle arrangement for each.

Front

Bonds Noun

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[bonds]

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Bonds

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The forces of attraction that hold atoms or particles together within a substance, determining its physical state.

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Example: Atoms of hydrogen and oxygen bond to form a water molecule, showing chemical bonds.

Front

Chemical Reaction Noun

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[kem-i-kuhl ree-ak-shuhn]

Back

Chemical Reaction

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A process that involves the rearrangement of atoms in starting substances to form entirely new substances with different properties.

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Example: The image shows hydrogen and oxygen atoms rearranging to form water, demonstrating a chemical reaction.

Front

Reactants Noun

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[ree-ak-tuhnts]

Back

Reactants

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The initial substances that are present at the beginning of a chemical reaction and undergo a change.

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Example: The image shows hydrogen and oxygen as reactants forming water in a chemical reaction.