Question

To change the state of matter thermal energy is

1. added only
2. removed only
3. constant
4. added and removed ​

Answer 1

Matter can change from one state to another when thermal energy is absorbed or released. This change is known as change of state. The graph in Figure 11 shows the changes in temperature as thermal energy is gradually added to a container of ice. heated, it absorbs thermal energy and its temperature rises.

Explanation:

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Answer 2

Answer:

4. added and removed.

Explanation:

To change the state of matter, you can either add or remove thernal energy. On adding thermal energy, the state of matter will either change from solid to liquid or from liquid to gas (E.g boiling). And on removing thermal energy, the state change from gas to liquid or from liquid to solid (E.g freezing).

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