Atomic Structure

Vocabulary

100

A positively charged subatomic particle is called a 

Proton

200

Positively charged mass at the center of an atom

nucleus

300

Identifies an element and is equal to the number of protons in the nucleus  

atomic number

400

Versions of the same element with different numbers of neutrons

isotopes

500

A visual model showing the most likely locations for the electrons in an atom

Electron cloud

Multiple Choice

100

Elements are composed of:

A. molecules

B. neutrons

C. atoms 

D. compounds

C. atoms 

200

Accounts for over 99% of the atom's mass

A. electrons

B. protons

C. neutrons

D. nucleus

D. nucleus

300

Max number of electrons the fourth level can hold

A. 16

B. 64

C. 100

D. 32

 

D. 32

400

An ion that loses electrons is called a 

A. ion

B. atomic ion 

C. anion

D. cation 

D. cation 

500

The octet rule states that _ valence electrons make an atom stable 

A. 2

B. 4 

C. 6

D. 8 

D. 8 

Calculations

100

Find the number of protons for sodium (Na)

11

200

Find the number of protons, neutrons and electrons in Hafnium 

Protons = 72 

Electrons = 72

Neutrons = 106

300

How many valence electrons does magnesium have?

2 

400

If Aluminum has a charge of +3, how many protons, neutrons and electrons does it have? 

Protons = 13

Neutrons = 14

Electrons = 10

500

Calculate (show your work) the number of neutrons in potassium-43 

Neutrons = 23 

Periodic Table

100

Which elements symbol is Mg

magnesium

200

Element on the periodic table with 34 protons

sulfur

300

What element has 74 neutrons (when in a normal, neutral state)

Iodine 

400

The variable used for atomic number is _. The variable used for mass number is _. 

Atomic number = Z

Mass number = A 

500

How many different groups are in the periodic table?

18 groups

Random

100

Mass number of carbon

12.01

200

Atomic number for Sulfur

16

300

Number of neutrons in Br-78

43

400

Number of protons, neutrons and electrons in Pb+4

Protons = 82

Electrons = 78

Neutrons = 125

500

What element has 110 neutrons (in a normal state, not charged) 

Tungsten