Atomic Models

Question 1

The total number of protons and neutrons is represented by what number?

Accepted Answer

Atomic Mass Number

Question 2

Which particle has a positive charge?

Accepted Answer

Proton

Question 3

A neutron has _____ .

Accepted Answer

No charge

Question 4

Which model shows ONLY the valence electrons?

Accepted Answer

Lewis Electron Dot Model

Question 5

Who discovered the nucleus?

Accepted Answer

Rutherford

Question 6

Elements in the same period all have the same ?

Accepted Answer

Number of electron shells

Question 7

Which electron model shows the nucleus and the electron shells in a circular orbit?

Accepted Answer

Bohr Model

Question 8

The Bohr model shows:

Accepted Answer

All of the atom's electrons in orbits

Question 9

Helium has ___ valence electrons.

Accepted Answer

2

Question 10

Who used a cathode ray to discover electrons?

Accepted Answer

Thomson

Question 11

The term "atoms" comes from which Greek philosopher?

Accepted Answer

Democritus

Question 12

To properly draw a Lewis Electron Dot Diagram, you need to know:

Accepted Answer

the number of valence electrons

Question 13

The further away from the nucleus, the _____ energy an electron has.

Accepted Answer

More

Question 14

Which atomic particle has a negative charge?

Accepted Answer

Electron

Question 15

Who discovered the nucleus through the use of a gold foil experiment?

Accepted Answer

Rutherford

Question 16

Which person said that matter is made up of four elements: fire, water, earth, air?

Accepted Answer

Aristotle

Question 17

Stable atoms have __ electrons in its outermost level.

Accepted Answer

8

Question 18

Which valence electrons will participate in chemical bonding?

Accepted Answer

Only the unpaired ones

Question 19

Unpaired electrons determine what?

Accepted Answer

How many chemical bonds the element can form

Question 20

Elements in the same Group have the same:

Accepted Answer

Number of valence electrons

Questions 20