When a Substance Dissolves, Heat Is Added to the Compound

question 53

True/False

When a substance dissolves, heat is added to the compound in the solid state, and it is converted to the liquid state. When a substance melts, as in water, the substance becomes surrounded by solvent molecules, and no heat is added.

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Definitions:

Facial-Feedback Hypothesis

The idea that sensory feedback from our facial expressions can affect our mood and emotions, suggesting that smiling can make us feel happier.

Positive Feelings

encompass emotions and sentiments that are uplifting, joyous, or gratifying, contributing to an overall sense of well-being.

Facial Expressions

Visual cues expressed by the muscles in the face conveying emotions, social information, or reactions to stimuli.

Paul Ekman

A psychologist who is best known for his work on the facial expressions of emotion and their relation to our feelings.