Altoms,elements,compounds,periodic Table Flashcards
1
Q
Atom
A
An atom is the smallest part of an element that still has the properties of that element
2
Q
Element
A
An element is a substance that cannot be broken down into simpler substance by chemical reaction
3
Q
Molecule
A
A molecule is composed of two or more atoms chemically combined
4
Q
Compound
A
Is a completely new substance with its own properties, it is formed when two or more elements are chemically combined (usually by burning
5
Q
Isotope
A
Atoms of the same element which have different number of neutrons e.g. Carbon - 12 and carbon - 14 (same of carbon dating in history)
