ELEMENTS: CHEMICAL REACTIONS Flashcards
1
Q
Why do scientists use equations to show chemical reactions? - 2
A
- It takes less time to write a word equation than to write a description
- The same rules are used so everyone knows what they mean
2
Q
Metals often react with non-metals, true or false?
A
TRUE
3
Q
When metals react with chlorine, what do they make?
A
Chlorides
4
Q
When metals react with sulphur, what do they make?
A
Sulphides
5
Q
What is iron sulphide commonly known as?
A
Rust
6
Q
What is an oxide?
A
When metals reacts with oxygen it makes an oxide.
An example of one is magnesium oxide
7
Q
What happens when non-metals react with oxygen? - 2
A
They make oxides
eg Hydrogen Oxide which is water
8
Q
What happens when carbon burns?
A
It forms two oxides which means it needs two different names
9
Q
What happens when carbon is burned with lots of oxygen
A
It makes carbon dioxide
10
Q
What happens when there is a lack of oxygen when carbon is burned?
A
It makes carbon monoxide
