Chapter 4: Elements, compounds, mixture Flashcards
1
Q
Define an element
A
An element is a pure substance that cannot be broken down into two or more simpler substances by chemical processes
2
Q
Define atoms
A
Atoms are the smallest particles of an element that have the chemical properties of that element
3
Q
Define molecules
A
A group of two or more atoms that are chemically combined together
4
Q
Define diatomic and polyatomic molecules
A
Diatomic: Made up of two atoms that are chemically combined together
Polyatomic: Made up of three or more atoms that are chemically combined together
5
Q
Define compounds
A
A compound is a pure substance containing two or more elements that are chemically combined in a fixed ratio
