Lesson 1 - Acids And Alkalis

Question 1

State some examples of acids in our bodies

Answer 1

Stomach acid, lactic acid, amino acids

Question 2

State some examples of acids at home

Answer 2

Tannic acid (tea), mallic acid, some acid in vinegar

Question 3

What is the range of pH that an acid has?

Answer 3

Range 1-7, (or less than 7)

Question 4

Examples of weak acids

Answer 4

Vinegar, Lemon juice

Question 5

What colour do acids turn litmus paper into?

Answer 5

Blue

Question 6

What can acids be neutralized with?

Answer 6

Alkalis

Question 7

How do most weak alkalis tend to feel like?

Answer 7

Soapy (safe to handle)

Question 8

What does it mean when a substance is caustic?

Answer 8

If a substance is caustic, it means that they can burn skin and damage other metals.

Question 9

What does it mean if a substance is corrosive?

Answer 9

If a substance is corrosive, it means that it can destroy your skin and break through metals

Question 10

What does it mean if a substance is an irritant?

Answer 10

If a substance is an irritant, it means that it can cause your skin to become red and irritated and it may cause you to get blisters.

Question 11

True or false, the larger the volume of acid the more concentrated it is

Answer 11

False

Question 12

True or false, H2SO4 is the chemical formula for Sulfuric acid

Answer 12

True

Question 13

Hcl acid in our stomach is a concentrated acid

Answer 13

True

Question 14

True or false, all acids contain the element He (helium)

Answer 14

False

Question 15

True or false, citric acid can be described as corrosive

Answer 15

False

Question 16

True or false, vinegar is an example of a weak acid

Answer 16

True