SC-105
Physical and chemical properties
Lower Sec Science · Secondary 1 · Medium · Physical and chemical properties
A solid substance X is heated strongly and breaks down to form substance Y and a gas.
Which statement correctly describes this change?
Which statement correctly describes this change?
- It is a chemical change because new substances are formed.
- It is a physical change because only the state of X changes.
- It is a physical change because no new substances are formed.
- It is not a change because X can be cooled back to its original form.
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