Perubahan Wujud Benda

Questions and Answers

Apa yang terjadi ketika suhu zat mencapai titik lelehnya?

Zat padat berubah menjadi zat cair.

Jelaskan perbedaan antara penguapan dan mendidih!

Penguapan terjadi ketika suhu zat cair meningkat, tapi belum mencapai titik didih. Mendidih terjadi ketika suhu zat cair mencapai titik didih.

Apa yang terjadi ketika zat gas mendingin hingga mencapai titik embunnya?

Zat gas berubah menjadi zat cair.

Berikan contoh zat yang dapat langsung berubah dari wujud padat menjadi wujud gas!

<p>Dry ice (CO2 padat) dapat langsung berubah menjadi gas CO2.</p> Signup and view all the answers

Jelaskan perbedaan antara kondensasi dan sublimasi!

<p>Kondensasi adalah perubahan wujud dari gas menjadi cair, sedangkan sublimasi adalah perubahan wujud dari padat langsung menjadi gas.</p> Signup and view all the answers

Study Notes

Perubahan Wujud Benda (Changes of State of Matter)

Melting

The process of changing a solid into a liquid
Occurs when the temperature of a substance increases to its melting point
Energy is absorbed during melting
Example: ice → water

Boiling

The process of changing a liquid into a gas
Occurs when the temperature of a substance increases to its boiling point
Energy is absorbed during boiling
Example: water → water vapor

Condensation

The process of changing a gas into a liquid
Occurs when the temperature of a substance decreases to its dew point
Energy is released during condensation
Example: water vapor → water

Sublimation

The process of changing a solid directly into a gas
Occurs when the temperature and pressure of a substance are suitable
Energy is absorbed during sublimation
Example: dry ice (solid CO2) → carbon dioxide gas

Evaporation

The process of changing a liquid into a gas
Occurs when the temperature of a substance increases, but not to its boiling point
Energy is absorbed during evaporation
Example: water → water vapor (at a temperature below 100°C)

Note: These changes of state are reversible, meaning they can occur in both directions.