Atoms and their composition Flashcards
(9 cards)
1
Q
Element
A
Elements are pure substances that cannot be separated chemically into simpler substances.
2
Q
Atoms
A
An atom is the smallest particle of an element that still retains the identity and properties of a given element.
3
Q
Atoms are made up of smaller particles. WHAT ARE THEY CALLED
A
These SUBATOMIC PARTICLES are PROTONS, NEUTRONS, and ELECTRONS.
4
Q
Electron
A
found in electron cloud
negative charge
5
Q
Proton
A
found in nucleus
positive charge
6
Q
Neutron
A
found in nucleus
neutral charge
7
Q
Mass number
A
Protons and neutrons
8
Q
Atomic number
A
protons
9
Q
Isotopes
A
ISOTOPES are atoms of an element that have the same number of protons, but different masses (therefore, different numbers of neutrons)
