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The scientific study of matter, the physical and chemical changes affecting matter and the energy changes that accompany those processes.
What is Chemistry?
Anything that occupies space
What is Matter?
The ability to do work to accomplish some change
What is energy?
This form of matter has definite weight, volume and shape
What is a solid?
The basic units of matter that cannot be broken down into simpler substances by any chemical reaction
What are elements?
This is the study of chemical reactions, such as growth, reproduction and respiration, that occur within a living organism.
What is Biochemistry?
Matter with definite weight, but indefinite volume and shape
This is the most abundant element in the earth’s crust
What is oxygen?
This is the smallest complete unit of an element
What is an atom?
This is created by chemically uniting two different elements
What is a compound?
The smallest particle of a compound that contains all of the chemical properties of that compound
What is a molecule?
A simple unit of a carbohydrate
What is a saccharide?
This term is used to describe a base
What is alkaline?
_________ releases a hydrogen ion and are positively charged
What are acids?
These are products packaged under pressure and blended with a gas inside a container
What are aerosols?
The unifying concept used to organize elements and their similarities
What is periodic law?
A change in a substance that creates a new substance with different material characteristics from those of the original substance
What is a chemical change?
This number identifies how many protons are in a single atom of an element on the periodic table
What is an atomic number?
Positive and negative ions join and are held together by this
What is an ionic bond?
Materials that dissolve and break down large molecules into smaller ones
What are enzymes?
This type of chemistry deals with matter that was never living and does not contain carbon
What is inorganic chemistry?
This type of chemistry deals with all matter that is now living or was alive at one time
What is organic chemistry?
This is a mixture of sebum and sweat combined with lipids, minerals and moisture to form a protective barrier for the skin
What is an acid mantle
This pH level will increase the skin's permeability and leave it vulnerable to injury by environmental factors
What is 8
This term describes the point when a solute will no longer dissolve evenly in the solvent
What is the saturation point