Question
What happens when iron and oxygen combine to form rust?
- A mixture is formed
- A chemical reaction occurs
- A solution is formed
- A physical reaction occurs
Hint:
Rusting occurs when iron is exposed in the air.
The correct answer is: A chemical reaction occurs
- Oxygen in air reacts with metallic iron to form FeO(rust).
- A chemical reaction occurs between iron and oxygen changing its chemical composition. Two elements form a new compound.
Related Questions to study
The copper alloys are
The copper alloys are
Brass is made up of
Brass is made up of
Which one will have more strength and durability?
Which one will have more strength and durability?
Pick the odd one out.
Pick the odd one out.
Steel is an alloy of
Steel is an alloy of
Match the following:
| a. Iron oxide | 1. Silver and copper |
| b. Sterling silver | 2. Rust |
| c. Steel | 3. Copper and tin |
| d. Bronze | 4. Iron and carbon |
Match the following:
| a. Iron oxide | 1. Silver and copper |
| b. Sterling silver | 2. Rust |
| c. Steel | 3. Copper and tin |
| d. Bronze | 4. Iron and carbon |
A compound results from the chemical combination of
| A – Two or more atoms only |
| B – Two or more non-metals only |
| C – Two or more metals only |
| D – Two or more atoms and non-metals |
A compound results from the chemical combination of
| A – Two or more atoms only |
| B – Two or more non-metals only |
| C – Two or more metals only |
| D – Two or more atoms and non-metals |
What helps corrosion?
What helps corrosion?
Pick the odd one out
Pick the odd one out
Direction
Choose the correct option from the sentences below.
Statement A: Rust is iron oxide, silver tarnish is silver sulfide, and copper tarnish is copper oxide.
Statement B: Corrosion is the gradual “eating away” of a metal.
Direction
Choose the correct option from the sentences below.
Statement A: Rust is iron oxide, silver tarnish is silver sulfide, and copper tarnish is copper oxide.
Statement B: Corrosion is the gradual “eating away” of a metal.
