Introduction to the particulate nature of matter - chemical elements, compounds & mixtures Flashcards
1
Q
Element definition
A
substances made from one kind of atom
2
Q
Compound definition
A
Contains a fixed ratio of atoms of two or more elements bound together by chemical forces.
3
Q
Matter definition
A
Any substance that occupies space and has mass
4
Q
Pure substance definition
A
Has a definite and uniform chemical composition. Can be an element or a compound.
5
Q
Mixture definition
A
A combination of two or more pure substances that retain their individual properties
6
Q
Homogeneous mixture definition and examples
A
Has uniform composition and properties throughout, e.g. air, or bronze (an alloy)
7
Q
Heterogeneous mixture definition and examples
A
Has non-uniform composition and varying properties, e.g. concrete, oil & water mixture
