Unit 2 List 1 Chemistry Flashcards
Atoms
A smallest unit of matter that is considered that is basic building block of all subtances .
Molecules
Two or more atoms that is connected by chemical bonds , which is a form of the smallest unit of subtance .
Homogenous Mixtures
A mixture where the components that are evenly distrbuted throughout , resulting a uniform .
Heterogenous Mixtures
The mixture in which the composition is not uniform throughout mixture .
Elements
The basic part of a whole .
Compounds
A material formed by chemically bonding two or more chemical elements .
Reactants
The subtance that changes in a chemical reaction .
Products
A species that is formed from chemical reactions .
Cation
The ion or changed particle with a positive charge .
Anion
A negative charged ion that would be attracted to the anode in electrolysis .
Periodic Table - Groups
A column in the periodic table of the chemical elements .
Periodic Table - Rows
The elements that is in the same row that are the same period .
Valence Electrons
The outermost shell or orbital of an atom .
pH scale
A logarithmic scale that is used to specify the acidity or basicity of aquenous solutions .
Acids
A hydrogen containing subtance that is capable of donating a proton .
Bases
A subtance that can accept hydrogen ions in a solution by a slippery feel , bitter taste , and a pH value greater than 7 .
Subtances
A particular kind of matter that is with uniform properties .
Chemical Properties
Any material properties that becomes evident during or after of a chemical reaction .
Physical Properties
The property of a physical system that is a measurable of the changes in the system .
Isotopes
A distinict nuclear species of the same chemical element that has the same atomic number .
Hydrogen Bonds
A specific type of of molecular interaction that exhibits partial covalent character .
Covalent Bonds
A chemical bond formed when electronsthat is shared between two atoms .
Ionic Bonds
The transfer of valence electrons between atoms .
