Properties of Matter
This is the scientific study of matter and the physical and chemical changes of matter
Chemistry
In what 2 ways can matter change from one form to another?
Physical or chemical changes
Basic substances that cannot be broken down into simpler substances
Elements
Hair is a form of protein called
Keratin
What are the 3 basic forms of matter?
Solid, liquid, and gas
Ice melting is an example of what kind of change?
Physical change
All matter is composed of what?
Atoms
This is the backbone of all protein molecules
Peptide bond AKA end bond
This is defined as anything that occupies space and has weight
Matter
This is a change in a substance that creates a new substance with different chemical characteristics from those of the original.
Chemical change
The core or nucleus of an atom is composed of what 2 things?
Protons and neutrons
These are compounds consisting of carbon, oxygen, hydrogen and nitrogen
Amino acids
This is the branch of chemistry that deals with matter that is or was living, carbon is present
Organic chemistry
Shampooing, blowdrying and curling the hair is creating what kind of change?
A temporary physical change
Unstable atoms allow for the creation of more complex units known as
Molecules
This bond is easily broken by heat and water and accounts for 35% of hairs strength
Hydrogen bonds
What are the 5 properties of matter?
Color, odor, weight/density, melting of boiling point, hardness/softness/glossiness
Perming or relaxing the hair is what kind of a change?
A permanent chemical change
What are the 5 elements that make up hair?
Carbon, oxygen, hydrogen, nitrogen, sulfur
This is the most important bond to the hairdresser and results in a permanent chemical change during perms and relaxers.
Disulfide bonds