
C 8 Revision
Authored by Freya Barnard
Science, Chemistry
11th Grade
Used 17+ times

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12 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Complete these sentences about Purity Formations...
Purity only contains ___ c_______ / e______.
Formulations are m______(s) with a precise p______.
Pigment - gives ______
Solvent - d_______(s) other components and alters v________
Binder - holds _______ in place
Additives - Change p_______ and c_______ properties
2.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Complete these sentences on Testing for PURITY...
(1) Measure m______ / b______ points
(2) Compare r_____(s) to the pure s________
(3) C_____ they are to matching. the p____ they are
(4) Impurities l_______ melting point
(5) Impurities ________ boiling point
3.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Complete these sentences on Testing for GASES...
Chlorine - b______(s) damp l_____ paper
Oxygen - A g______ splint inside a test tube containing ______. The ______ will r______ the glowing splint.
Carbon Dioxide - B_____ CO2 through an a______ solution of c______ h________ (lime water). Its turns the solution ______.
Hydrogen - Burning s_____ at the o___ end of a test tube. You get a s______ p__.
4.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Complete these sentences on Paper CHROMATOGRAPHY...
Substances constantly m___ between the m_____ and the s_________ phase.
The Mobile phase m___(s) through the s_________ phase and anything d________ in the moble phase m___(s) with it.
How quickly a chemical moves depends on how its d__________ between the two phases.
Pure substances will only ever form ___ spot.
5.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
Select the correct phases of Paper Chromatography...
Mobile Phase
(Molecules can move)
Stationary Phase
(Molecules can't move)
Moving Phase
(Molecules can move)
Stopped Phase
(Molecules can't move)
6.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Fill in these blanks for the equation for Paper Chromatography...
Rr = D_______ t________ by s________(s) (B) ____________________________________
D_______ t________ by s______ (A)
7.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Complete these sentences on testing for ANIONS....
DETECTING CARBONATES : -
- Dropping p______ add a few drops of dilute a___
- Connect to a test tube containing l___ w____
If carbonate ions are present there reaction releases ______ _______, which will turn the l___ w____ c_____ when it bubbles through.
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