Periodic Table of Elements Atomic Numbers

Atom Structure and Elements in A Box

By Julia Lequin

Atom Structure and Element In A Box

Multiple Choice

The subatomic particles are the

• protons, electrons, neutrons in an atom

• protons and neutrons in the nucleus of an atom

• earth, fire, air, and wind that made up matter

Multiple Select

Atom is the smallest piece of matter. Which describes the structure of an atom?

• An atom has 3 subatomic particles in it.

• An atom contains protons, electrons, neutrons.

• An atom is typically charged matter.

• An atom is just like a ball and nothing in it.

Multiple Choice

The subatomic particle that has a positive charge is called

• proton

• electron

• neutron

Multiple Choice

Electrons are

• positively charge particles

• negatively charge particles

• neutral particles

Multiple Select

The two subatomic particles are located in the nucleus and make up most of the atom mass.

• protons

• electrons

• neutrons

• atomos

Fill in the Blank

The subatomic particle that can be found outside the nucleus of an atom.

Multiple Choice

Electrons are found outside nucleus of an atom while protons and neutrons are found inside of it. What is the charge of the nucleus of an atom?

• positive

• negative

• neutral

• cannot be determined

​

​Carbon-12

​

#of protons= 6

#of electrons=6

#of neutrons=12​

​

Hydrogen-1

# of protons=1

# of electrons=1

# of neutrons=0​

Fill in the correct information about of oxygen atom

​

​# of protons=

#of electrons=

#of neutrons=

atomic number=

atomic mass(mass #)=​

​

​What is inside the box of elements in the PTable?

​The atomic number is use to arrange the elements in order in the periodic table.

​

The atomic number tells the number of protons of an element​

​​What is the atomic number?

Atomic mass= the number of protons and neutrons inside the nucleus of an atom

Mass number = #p⁺ + #n^-​

​​Atomic mass or Mass Number

​

​Atomic mass of an element=

#of protons + #of neutrons​

​Remember:

Atomic number of an element =

# of protons = # of electrons​

​

Multiple Choice

The atomic number of element iron(Fe) is

• 55.84

• 55

• 26

• 14

Multiple Select

An atom of an element iron has

• 26 protons

• 26 electrons

• 26 neutrons

• 26 atomic number

Multiple Select

The mass number of atoms is equal to the number of protons and the number of neutrons. Therefore, the carbon atom has

• 12 neutrons

• 6 neutrons

• 6 protons

• 6 electrons