Unit 1: Introduction Flashcards
Any substance that has mass and takes up space by having volume.
Matter
A state of matter that is compact and has a definite shape and volume (Ex. Bones and Teeth)
Solid
A state of matter that has a definite volume and assume the shape of their container (Ex. Blood Plasma)
Liquids
A state of matter that neither has a definite shape nor volume. (Ex. Oxygen and Carbon Dioxide)
Gasses
Building blocks of all forms of living and non-living matter.
Chemical Elements
One or two letters of the element’s name in English, Latin, or another language (Ex. H for Hydrogen)
Chemical Symbol
Smallest units of matter that retain the properties and characteristics of the element.
Atoms
The basic composition of an atom.
Subatomic Particles
The three types of subatomic particles.
Protons, Neutrons, and Electrons
Positively charged subatomic particles
Proton
Negatively charged subatomic particles
Electrons
An atom that has a positive or negative charge because it has equal numbers of protons and electrons.
Ion
The process of giving up or gaining electrons.
Ionization
The resulting combination of two or more atoms that share electrons
Molecule
It indicates the elements and the number of atoms of each element that make up a molecule
Molecular Formula
A substance that contains atoms of two or more different elements (Ex. Water (H2O))
Compound
An atom or group of atoms with an unpaired electron on the outermost shell
Free Radical
The forces that hold together the atoms of a molecule or a compound
Chemical Bounds
The force of attraction that holds together ions with opposite charges
Ionic Bond
Positively charged ion (Ex. Hydrogen ion, Sodium ion, Potassium ion)
Cation
Negatively charged ion (Fluoride ion, Chloride ion, Iodide ion)
Anion
Ionic compound that breaks apart into positive and negative ions in solution.
Electrolytes (Most ions in the body are dissolved in body fluids as electrolytes)
Two or more atoms share electrons rather than gaining or losing them
Covalent Bond
Forms when a hydrogen atom with a partial positive charge attracts the partial negative charge of neighboring atoms.
Hydrogen Bond
Occurs when new bonds form or old bonds break within atoms
Chemical Reaction
Refers to all chemical reactions occurring in the body.
Sum of all chemical reactions within a biological system.
Related to management of energy supply and generation of molecules for cellular synthesis.
Metabolism
The capability to do work.
Energy
The two basic types of energy.
Potential Energy and Kinetic Energy
Energy stored by matter due to its position.
Potential Energy
The energy associated with matter in motion.
Kinetic Energy