ChPter 2 Matter Xavier Williams Flashcards
What is chemistry
the branch of science that deals with the identification of the substances of which matter is composed;
What is matter
Anything in which occupies space and possesses rest mass, especially as distinct from energy.
What is an element
An element is a substance consisting of atoms which all have the same number of protons
What is an atom
The basic unit of a chemical element
What is a compound
is a substance formed when two or more chemical elements are chemically bonded together.
What is a molecule
A molecule is the smallest part in a chemical element and compound and has chemical properties like a chemical element and a compound.
What is a chemical formula
Is a way of expressing information about the proportions of atoms that constitute a particular chemical compound
What is a pure substance
It has a definite and constant composition
What is a mixture?
A mixture is a combination of two or more things.
