Elements, Symbols, and Number of Atoms

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

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