Which of the Following Observations Is/are Examples of Physical Change $^{\circ}$

question 9

Multiple Choice

Which of the following observations is/are examples of physical change?
1) The density of water decreases when it solidifies.
2) Aluminum melts when heated above 660 $^{\circ}$ C.
3) Hydrogen peroxide (H₂O₂) decomposes to water and oxygen.

• A) 1 only
• B) 2 only
• C) 3 only
• D) 1 and 2
• E) 1,2,and 3

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Definitions:

Work Motivation

The set of psychological forces that compel an individual to engage in work tasks and career activities.

Social Influence

The effect that words, actions, or mere presence of other people have on our thoughts, feelings, attitudes, or behavior.

Leadership

The ability to guide, influence, or direct a group towards the achievement of goals.

Internal Locus Of Control

The belief that one's actions and efforts directly influence the outcomes and events in their life.