Compounds Flashcards
1
Q
what is the definition of a compound?
A
a compound is a substance containing more than one type of atom, chemically bonded together
2
Q
how can you form compounds?
A
by heating their elements together
3
Q
what are the three types of compound?
A
- metallic (metal)
- ionic (metal + non-metal)
- covalent (non-metal)
4
Q
describe the ammonium chloride tube practical
A
- two gases, ammonia and hydrogen chloride diffuse from the ends of the sealed tube
- where they meet, the compound ammonium chloride forms as a white smoke
- this shows that the hydrogen chloride molecules must be heavier, as they diffused slower
5
Q
what is the word equation for the ammonium chloride in a tube practical?
A
ammonia + hydrogen chloride -> ammonium chloride
6
Q
what happens if you heat up the tube, in the ammonium chloride tube practical?
A
- if you heat up the tube, the white smoke forms faster because the particles move faster and collide more often
- it still forms in the same place because both gases diffuse faster