Parts of an Aton
Located in the nucleus and has a positive charge
proton
The electrons move at a high rate of speed and do not orbit the nucleus
Modern Atomic Theory
Atom is the building block of what?
All matter
Atoms are made up of completely solid space
false
p or p+
what is this a symbol of?
protons
Located in the nucleus and has no charge
Neutron
Atoms were the smallest particles of matter and believed to be solid.
Daltons Theory
Where is everything made up of atoms
The universe
Electrons are larger than protons
False
n or n^o
Which subatomic particle does this symbol represent?
Neutron
Located outside of the nucleus and has a negative charge
Electron
Electrons are placed randomly in a "soup" of positive charges.
Thomson's Theory
Most of the atom is made up of what kind of space?
Empty space
The nucleus of an atom is always positively charged
true
What does e or e- represent?
Electron
name of the smaller parts that make an atom
Subatomic particles
Atoms are made up of mostly empty space with a positively charged nucleus. Electrons orbit like planets around the sun
Rutherford's Theory
Groups of atoms held together are called?
Molecules
Most of the mass of the atom comes from the protons and electrons in the nucleus.
False
Location of neutrons and protons
nucleus
What is the center of the atom called?
The nucleus
Atoms have a positively charged nucleus. The electrons move in a fixed orbit around the nucleus.
Bohr's Theory
(Blank) are made up of only one type of atom.
Elements
Neutrons have zero charge
true
Location of electrons
Electron cloud