1. A physical change alters the form or appearance of a substance but does not change its chemical composition

Question

1. A physical change alters the form or appearance of a substance but does not change its chemical composition. No new substance is created.

ScanSolve AI Tutor · Accepted Answer

Here are the answers to the questions:

1.  A *physical change* alters the form or appearance of a substance but does not change its chemical composition. No new substance is created.

2.  An *emotion* is a complex psychological state involving subjective experience, physiological responses, and behavioral expressions.

3.  Our body undergoes constant processes like growth, repair, and metabolism. It also reacts to external stimuli and internal states, such as emotions, through physiological responses like changes in heart rate, breathing, and hormone levels.

4.  This question is incomplete and cannot be answered as written.

5.  Complete the table by Simil and difference.
    *   **Similarities:**
        *   Everyone has *basic human needs* (e.g., food, water, shelter).
        *   Everyone experiences *emotions*.
        *   Everyone has a *unique identity*.
    *   **Differences:**
        *   People have different *physical appearances* (e.g., height, hair color).
        *   People have different *personalities, interests, and beliefs*.

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