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10. The gapped words below all describe physical or chemical properties of substances. The meaning of each word is given on the right. Complete the words with the correct vowels (a, e, I, o, u)

1. br_ttl_n_ss

how easily something can be broken

2. c_p_c_t_nc_

how well something holds an electrical charge

3. c_nc_ntr_t n

how much of one substance is found in another

4. c_nd_ct_v_ty

how well something allows heat or electricity to go through it

5. d_ns_ty

how much mass a given volume of a substance has

6. fl_mm_b_l_ty

how easily something burns

7. l_m_n_nc_

how much light passes through or comes from a substance

8. m_ss

how much matter is in a solid object or in any volume of liquid or gas

9. p_rm__b_l_ty

how easily gases or liquids go through a substance

10. p_r_s_ty

11. pr_ss_r_

how many small holes are in a substance

how much force a liquid or gas produces when it presses against an area

12. r__ct_v_ty

how easily a chemical substance reacts

13. s_l_b_l_ty

how easily something can be dissolved to form a solution

14. v_l_c_ty

how quickly an object is travelling

15. v_sc_s_ty

how thick a liquid is

16. v_l_m_

how much space is contained within an object or solid shape

11. Complete the sentences by choosing the correct preposition (a, b or c).

1. First, leucine was separated_____other amino acids in the protein hydrolysate.

a. for b. from с. with

2. Many bacteria, such as Bacillus spp., can be isolated ______insects.

a. from b. to с. with

3. Subsequently, the specimens were embedded _____ methylmethacrylate.

a. at b. in с. to

The sections were stained______uranylacetate and lead citrate solutions.

a. with b. to с. under

4. MIP-1 β was added to wells which had been coated _____ BSA.

a. by b. from с. with

5. pH is maintained ____6.5, using Waterlife Buffer and Sera pH Minus.

a. at b. in с. to

1 2. Look at the diagram from a review of supercritical fluid technology.

Complete the description of the process using the words in the box.

at first then was which [x2]

The diagram provides a schematic view of the rapid expansion of supercritical solutions (RESS) process. (1)________, the supercritical fluid (SF) (2) _______ pumped into the vessel (3)_______ contained the solid solute. The SF dissolved
and became saturated with the solute. The resultant solution was (4)_____ introduced into a precipitation chamber by
expansion through a laser-drilled nozzle. The precipitation unit was maintained (5) ______conditions where the solute had low solubility in the SF. As the SF expanded, its solubility decreased, (6 ) _______ resulted in a high degree of solute supersaturation and subsequent
precipitation.

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