New properties
A compound is unlike its elements.
Sodium and chlorine
Sodium is a soft metal. Chlorine is a hazardous gas. Together they make common salt.
Is common salt like sodium and chlorine?
What this lesson covers
The idea
The properties of a compound are different from those of the elements forming it.
Sodium and chlorine
Sodium is a soft metal. Chlorine is a hazardous gas. Together they make common salt.
Is common salt like sodium and chlorine?
- No, it is quite different
- Yes, exactly the same
- It is a hazardous gas
Compare properties
Open both tabs.
Different properties
The properties of a compound are different from those of the elements that form it.
The properties of a compound are different from the properties of the elements that form it.
Notes
A compound has different properties from its elements.
Check yourself
The properties of a compound are …
Sodium and chlorine combine to form sodium chloride. Sodium chloride is …
Hydrogen is a fuel and oxygen supports combustion, but water …
Sodium is …
- the same as those of its elements. They are different.
- a mix of the two always. They are different from its elements.
- different from those of its elements — correct. Yes!
- harmless and essential for life — correct. Yes!
- a hazardous gas. That is chlorine.
- a soft metal. That is sodium.
- burns even more. Water extinguishes fire.
- extinguishes fire — correct. Yes!
- supports combustion. Water extinguishes fire.
- a hazardous gas. Chlorine is the hazardous gas.
- the same as common salt. Sodium chloride is the compound. Sodium is a soft metal.
- a soft metal — correct. Yes!