Mystery Mixture Flashcards
1
Q
Mystery Mixture Reaction Observations
A
- instant fizzing and foam
- endothermic reaction (it got colder)
2
Q
Evaporated Mystery Mixture Observations
A
- all liquid has evaporated
- a white mark/residue has been left
- it doesn’t come off when you touch/scrape it
- the residue’s shape (2D) has many small pointy lines coming out from an upper base
- it has a smooth texture
3
Q
Citric Acid+Sodium Bicarbonate Reaction Observations
A
- instant fizzing and foam
- endothermic reaction (it got colder)
4
Q
Evaporated Citric Acid+Sodium Bicarbonate Reaction Observations
A
- all liquid has evaporated
- a white mark/residue has been left
- it doesn’t come off when you touch/scrape it
- the residue’s shape (2D) has many small pointy lines coming out from an upper base
- it has a smooth texture
5
Q
why isn’t ascorbic acid used
A
it leaves a yellow residue
6
Q
why isn’t salt or sugar used
A
no bubbling
7
Q
why isnt chalk used
A
leaves a thick, crumbly, residue
