8.5b review

what is an Atomic Number?

• the number of protons in the nucleus of an atom,

• what the element symbol is called

• the mass of the element

• the reason why there is a periodic table

what image is a Bohr Model

(pick the 2 correct answers)

• 
• 
• 

were the electrons are

• the blue dots

• the red dots

• the rings

what is a proton

• atom consist of a small but massive nucleus

• a stable subatomic particle with a charge of negative electricity,

• A cloud of rapidly moving electrons

• a stable subatomic particle with a positive electric charge

what is an Atom

• electrons surrounding the nucleus

• a source of nuclear energy

• positive electric charge

• charge of negative electricity

what elements are not in the metals

• aluminum

• silver

• sulfur

• iron

how many valence electrons does neon have

• 6

• 8

• 2

• 1

what are not examples of Chemical Property

• flammability

• density

• heat of combustion

• toxicity

True or false: 1 and 7 are the most Reactive

• FALSE

• TRUE

what is not a true fact about Atomic Nucleus

• positively charge

• located in the center of the atom.

• negatively charged

• holds 99.99% of the mass of the atom