Unit 3 Atoms & the Periodic Table

The smallest particle of an element that retains the chemical identify of that element is

• Atom
• Molecule
• Cell
• Proton

Particles that are smaller than an atom and contain Protons, Neutrons, & Electrons are

• Gigaatomic particles

• Subatomic particles

• Megaatomic particles
• Superatomic particles

This is the location of protons and neutrons, the core of the atom, and 99% of atomic mass is

• electron cloud
• nucleus
• outer shell
• nuclear membrane

These are positively charged and are all identical regardless of the element they are found in

• Neutrons

• Electrons

• Protons

• Nucleus

These have no charge and share the nucleus with protons

• Electrons
• Photons
• Neutrons
• Neutrinos

These are negatively charged and small

• Protons
• Neutrons
• Electrons
• Positively charged and large

2000 Electrons equal the mass of

• 1 Neutron

• 1 Proton

• 1 Electron

The location of electrons that surrounds the nucleaus and is divided into energy levels (rings or shells)

• Photon cloud
• Neutron cloud
• Electron cloud
• Proton cloud

The ___________ properties of elements are determined by the location of electrtons in the electron cloud

• chemical
• thermal
• magnetic
• physical

The more energy an electron has the ________ it will be from the nucleus

• closer
• heavier
• farther
• stationary