Question

Complete Table 1.1 to show the results from the students’ tests for protein.
Table 1.1
food supplement colour at start colour at end
P
Q
R
[2]
The students carried out a test for vitamin C on liquid samples of food supplements P, Q and R.
When iodine solution is mixed with starch, a blue-black colour is observed. Vitamin C stops this
blue-black colour from forming.
Step 1 The students labelled a test-tube P and added 3 cm3 of food supplement P to the testtube.
Step 2 They added 1 cm3 of starch solution to test-tube P.
Step 3 The students added iodine solution to the test-tube, one drop at a time. They counted the
drops as they added them. They shook the test-tube gently after adding each drop and
stopped adding drops when a blue-black colour remained.
A blue-black colour remained in P after 12 drops of iodine solution had been added.
Step 4 They repeated steps 1 to 3 with food supplements Q and R.
A blue-black colour remained in Q after 1 drop of iodine solution had been added.
A blue-black colour remained in R after 5 drops of iodine solution had been added.

Answer 1

Answer:

where is the table 1.1 .

.........

Answer 2

Answer:

what is this

Explanation:

evalo big aa irukku