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Chemistry in Haircolor Test

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

_______ is anything that occupies space.

a)

Element

b)

Matter

c)

Atoms

d)

Compound

2.

the basic form of matter

a)

Elements

b)

Atom

c)

Molecule

d)

Compound

3.

How many known elements are there?

a)

90

b)

65

c)

118

d)

208

4.

What are the 5 Elements that make up our hair strand?

a)

Carbon, Oxygen, Hydrogen, Nitrogen, Sulfur

b)

Carbon, Oxygen, Hydrogen, Nitrogen, Phosphorus

c)

Carbon, Oxygen, Hydrogen, Nitrogen, Calcium

d)

Carbon, Oxygen, Hydrogen, Nitrogen, Iron

5.

What is the basic unit of matter?

a)

Element

b)

Matter

c)

Atom

d)

Compound

6.

When 2 or more atoms get together, we make a _______

a)

Element

b)

Molecule

c)

Atom

d)

Matter

7.

What Molecule has 2 or more of the same type of atom? Example.. O2

a)

Elemental

b)

Matter

c)

Compound

d)

Solid

8.

What Molecule has 2 or more of the different types of atoms? Example H2O2

a)

Elemental

b)

Matter

c)

Compound

d)

Solid

9.

Matter comes in 3 states

a)

Cream, liquid, gas

b)

Ice, Solid, gas

c)

Solid, Liquid, gas

d)

Solid, Cream, gas

10.

A ________ Change occurs when there is a change in the physical appearance without chemicals.

a)

Physical Change

b)

Chemical Change

c)

Nuclear Change

d)

Biological Change

11.

A ________ change occurs when there is a change in the appearance with the use of chemicals.

a)

Chemical change

b)

Physical change

c)

Mechanical change

d)

Biological change

12.

What elements primarily make up a hair strand according to the acronym COHNS?

a)

Calcium, Oxygen, Helium, Nitrogen, Sodium

b)

Carbon, Oxygen, Hydrogen, Nitrogen, Sulfur

c)

Copper, Oxygen, Hydrogen, Neon, Silicon

d)

Chlorine, Oxygen, Helium, Nitrogen, Sulfur

13.

Which of the following is a common color product used in hair treatments?

a)

Sodium chloride (NaCl)

b)

Ammonia (NH3)

c)

Carbon dioxide (CO2)

d)

Methane (CH4)

14.

What is the chemical formula for hydrogen peroxide, a common color product?

a)

H2O

b)

H2O2

c)

H2SO4

d)

HCl

15.

What is the backbone of all organic molecules, including the proteins that make up hair?

a)

Hydrogen

b)

Oxygen

c)

Carbon

d)

Nitrogen

16.

What does carbon provide to the hair strand?

a)

Flexibility and color

b)

Strength and stability

c)

Moisture and shine

d)

Elasticity and growth

17.

What is the role of sulfur in the formation of disulfide bonds?

a)

It breaks down disulfide bonds.

b)

It forms hydrogen bonds.

c)

It is crucial for the formation of disulfide bonds.

d)

It dissolves disulfide bonds.

18.

What are the three main parts of the hair shaft?

a)

Cuticle, Cortex, Medulla

b)

Epidermis, Dermis, Hypodermis

c)

Follicle, Root, Shaft

d)

Keratin, Melanin, Sebum

19.

What is the role of ammonia (NH₃) in hair coloring?

a)

It adds color to the hair.

b)

It opens the hair's cuticle for color molecules to enter.

c)

It acts as a conditioner.

d)

It removes color from the hair.

20.

What is the role of hydrogen peroxide (H2O2) in hair coloring?

a)

It acts as a reducing agent.

b)

It adds color to the hair.

c)

It is an oxidizing agent that lightens hair by breaking down melanin.

d)

It strengthens hair follicles.

21.

Which property of hair refers to the thickness or thinness of individual hair strands? Fine, Medium or Coarse

a)

Density

b)

Texture

c)

Elasticity

d)

Porosity

22.

What refers to the number of hair strands per square inch of the scalp? Thin, Medium & Thick

a)

Density

b)

Texture

c)

Elasticity

d)

Porosity

23.

What does porosity refer to in hair?

a)

The hair's ability to absorb moisture and color

b)

The hair's strength and elasticity

c)

The hair's thickness and volume

d)

The hair's growth rate

24.

What type of hair bond is damaged by bleach and chemical treatments?

a)

Salt bonds

b)

Hydrogen bonds

c)

Disulfide bonds

d)

Ionic bonds

25.

How does high porosity affect hair?

a)

It makes the hair resistant to color

b)

Cuticle is open allowing color molecules to penetrate easily... damaged hair

c)

Cuticle is slightly raised It causes the hair to process with no difficulty

d)

It results in a tightly closed cuticle making it harder for color to enter.... resistant hair