Atomic Structre

Which parts of the atom move around the nucleus?

• electrons

• protons

• electrode particles

• neutrons

The _____________ is the number of protons and neutrons in an atom.

• Atomic Mass
• Atomic Symbol
• Atomic Number
• Atomic charge

How many protons does an atom with an atomic number of 28 and a mass number of 40 have?

• 28
• 68
• 12
• 40

The negative charge particles that float around the outside of the atom

• Proton
• Neutron
• Electron

The smallest possible unit matter can be divided into while still maintaining its properties.

• Proton
• Atom
• Element

Atoms are built of sub-atomic particles called =

• Nucleus

• Neutrons

• Radical

• Protons

• Electrons

What is different about an isotope?

• # of protons
• # of electrons
• # of neutrons

What is the term for the number of protons in the nucleus of the atom? 

• Atomic Number
• Mass Number
• Atomic Mass

Electrons have a ___________ charge.

• Positive
• Negative
• Neutral

According to the Modern Atomic Theory,

Atoms are indivisible, smallest particle of an element.

TRUE OR FALSE?

• TRUE

• FALSE