The diagram below shows the PH values of several substances. (A) Based on PH value for substances K and M, what are the changes observed when we are testing the substances by using the blue litmus paper?

K : Blue -> ?
M : Blue -> ?

(B) Give example of substances/solutions for :
L =
M =

Changes in colour of litmus paper.

Blue litmus turns red under acidic conditions.Red litmus turns blue under basic conditions.

Noe

PH values:-

K=4M=11

K is acidic as pH is <7

Hence K will change the colour of blue litmus paper.

#B

Examples of substances

K=Vinegar, Tomatoes.M=Milk of magnesia,Soap

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

The answer is the first option just took the test