Mixtures and pure substances Flashcards
When a _________ contains at least ____ types of particles (____ or _______), we call it a ______
When a substance contains at least two types of particles (atoms or molecules), we call it a mixture
When all the ________ in a substance are ________,
we consider it a ______________.
When all the particles in a substance are identical,
we consider it a pure substance.
A ________ consists of at least ___
__________ substances, that is, it contains at least ____ types of _________.
A MIXTURE consists of at least two
different substances, that is, it contains at least two types of particles.
A _______________ consists of ___
_______________, that is, it contains only
___ type of __________.
A PURE SUBSTANCE consists of one
substance, that is, it contains only
one type of particle.
Mixtures can be divided into two types:
heterogeneous mixtures and homogeneous mixtures.
A __________________ is made up of at least ___ ___________ that ____ be distinguished with the naked eye.
A HETEROGENEOUS MIXTURE is made up of at least two substances that can be distinguished with the naked eye.
A _____________________ is made up of at least ___ ______________ that _______ be distinguished with the naked eye.
A HOMOGENEOUS MIXTURE is made up of at least two substances that cannot be distinguished with the naked eye.
What is a compound?
A COMPOUND is a pure substance that contains at least two types of atoms that have chemically combined; it can be separated into its constituent elements, using chemical separation techniques.
What is an Element?
An ELEMENT is a pure substance that contains only one type of atom; it is impossible to separate an element into other substances, using chemical separation techniques.
