Chemical Analysis N4

Question 1

What pH level is neutral?

Answer 1

pH 7

Question 2

What pH level are acids?

Answer 2

Below pH 7

Question 3

What pH level are alkalis?

Answer 3

Above pH 7

Question 4

What is an indicator?

Answer 4

A chemical that changes colour in different pH levels

Question 5

What numbers does the pH scale go from and to?

Answer 5

1-14

Question 6

Is strong and weak the same as concentrated and dilute?

Answer 6

No

Question 7

What is titration?

Answer 7

An analytical technique to determine the concentration of ions in a solution

Question 8

What equipment is used during the titration technique?

Answer 8

Pipette and buriette

Question 9

Name 6 different types of indicator

Answer 9

Universal, phenolphthalein, red cabbage, methyl orange, bromothymol blue, pH paper

Question 10

Why is chemical analysis important?

Answer 10

It monitors our environment to ensure that it remains healthy and safe

Question 11

What is qualitive analysis?

Answer 11

Determines which chemicals may be in a sample

Question 12

What is quantitive analysis?

Answer 12

Finds out how much there is of a certain chemical

Question 13

Examples of qualitative analysis?

Answer 13

Flame testing, chromatography, precipitation

Question 14

Examples of quantitave analysis?

Answer 14

Titrations, precipitation, gravimetric analysis

Question 15

What can chromatography be used for?

Answer 15

Food safety and testing drugs

Question 16

What are all the variables?

Answer 16

Control - what you keep the same
Independent - what youre changing
Dependent - what youre measuring

Question 17

Whats a solute?

Answer 17

What you’re trying to dissolve

Question 18

Whats a solvent?

Answer 18

The liquid where the solute dissolves

Question 19

Whats a solution?

Answer 19

Solute + solvent