Chemistry Flashcards
Basic units of matter
Elements
Number of Protons in an element
Atomic number
Smallest unit of element
Atoms
These elements make skin , hair , nails.
Carbon, Oxygen, Hydrogen, Nitrogen and Sulfur
Atoms are made of:
_________= positive charge
_________=no charge
_________=negative charge
Protons+Neutrons=_________ _________
Proton = Positive Neutrons = Neutral Electrons = Negative
Protons+Neutrons= Molecular weight in the nucleus
Unstable atoms share electrons and chemically combine
Molecule
Different elements combine
Compound
What does the body use to renew itself?
Protein to renew and construct
Dissolve large molecules into smaller ones
Enzymes break down large molecules
How many acids?
22
What do amino acids consist of?
Carbon, Hydrogen, Oxygen, Nitrogen
pH
potential Hydrogen
pH of skin
4.5-5.5
What is pH of distilled water
7 ( neutral )
The pH scale is?
Logorythmic
A pH of 10 is how many times more alkaline than 8?
100
2 or more compounds mixed physically
Mixture
2 or more chemicals
Chemical mixture