Chapter 4: Elements, compounds and mixtures Flashcards
1
Q
What is an element?
A
A pure substance that cannot be broken down into two or more simpler substances by chemical processes
2
Q
What is a compound?
A
A pure substance containing two or more elements that are chemically combined in a fixed ratio
3
Q
What is a mixture?
A
Made up of two or more substances that are not chemically combined
4
Q
Purity
A
Element: Pure
Compound: Pure
Mixture: Impure
5
Q
Melting/boiling point
A
Element: Fixed
Compound: Fixed
Mixture: Not fixed
6
Q
Types of atoms
A
Element: One type only
Compound: More than one type, chemically bonded
Mixture: More than one type, not chemically bonded
