C 8 Revision

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

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

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__.

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.

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)

Fill in these blanks for the equation for Paper Chromatography...

Rr = D_______ t________ by s________(s) (B) ____________________________________

D_______ t________ by s______ (A)

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.

Complete these sentences on Testing for ANIONS...

Tests for SULFATES: -

- Add a couple of drops of dilute h___________ acid

- Add a few drops of b_____ c_______ solution

W____ precipitate of b_____ s______ will form

Complete these sentences on testing for ANIONS...

Tests for HALIDES...

- Add a couple of drops of dilute n_____ acid

-Add a couple of drops of s_____ n______ solution

Chlorine ----> _____

Bromine -----> _____

Iodine -----> _____

Fill in the blanks for these sentences on Testing for CATIONS...

Flame test for metal ions: -

Lithium -----> _______

Sodium -----> ______

Potassium -----> _____

Calcium - ______ / ___

Copper - _____