Question
Sodium metal must be stored under oil to keep it from
- Reacting in seconds with oxygen in the air
- Mixing with water
- Becoming solid
- None of the above
Hint:
Sodium is a very reactive metal.
The correct answer is: Reacting in seconds with oxygen in the air
- Sodium is stored in oil to protect it from moisture and oxygen in the air.
- As it reacts with them and form sodium hydroxide
Related Questions to study
Alloy is a mixture of two or more metals and non-metals.
Alloy is a mixture of two or more metals and non-metals.
Corrosion is the gradual __________of a metal because it reacts __________ to form a compound that weakens it.
Corrosion is the gradual __________of a metal because it reacts __________ to form a compound that weakens it.
The Bronze Age spear point is made of
The Bronze Age spear point is made of
What happens when iron and oxygen combine to form rust?
What happens when iron and oxygen combine to form rust?
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.
