UNIT 2-Chemistry Flashcards
The smallest part of a substance that cannot be broken down chemically
Atoms
The smallest particles of a substance that has all of the physical and chemical properties of that substance
Molecules
a particular kind of matter with uniform properties
substances
a gaseous,liquid or solid mixture that has the same proportions of its components thought out a given sample
Homogenous Mixtures
a gaseous,liquid or solid mixture that has the same proportions of its components thought out a given sample
Heterogeno us Mixtures
a characteristic of a particular substance that can be observed in a chemical reaction
Chemical properties
a characteristic of a substance that can be observed or measured without changing the identity of the substance
Physical properties
A form of a chemical element in which the atoms have the same number of protons but with a different number of neutrons
Isotopes
a part or aspect of something abstract especially one that is essential or characteristic
Elements
a substance made from two or more different elements have been chemically joined
Compounds
an article or substance that is manufactured or refined for sale
Products
a substance that takes part in and undergoes change during a reaction
Reactants
an electrostatic attraction between a hydrogen atom in one molecule and a small electronegative atom is usually another molecule of the same or a different polar substance
Hydrogen Bonds
The mutual sharing the one or pairs of electrons between two atoms
Covalent Bonds
type of linkage formed from the electrostatic attraction between oppsitely changed ions in a chemical
Ionic Bonds
an ion, or changed particle with a positive chanrge
Cation
a column in the periodic table of the chemical elements
periodic table-groups
an atom that has more electrons than protons
Anion
a horizontal row of the periodic table
periodic table rows
A single electron or one of two or more eletrons in the outer shell of an atom that is responsible of the chemical properties of the atom
Valence Electrons
a measure of how acidic/basic water is
PH scale
a chemical that gives off hydrogenions in water and form salts by combings with certain metals
Acids
plural form of basis
Bases
