Atoms and Elements

Atomic Structure (subatomic particles)

Multiple Choice

All matter is made of what 

• energy 

• electrons 

• atoms 

• compounds 

Multiple Choice

The central region of an atom where its neutrons and protons are is its 

• nucleus 

• core 

• energy shell

• center

Multiple Choice

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes

• positives, negatives, and electrons

• neutrons, isotopes, and electrons

• protons, neutrons, and electrons

Multiple Choice

Which subatomic particles have no charge (they are neutral)?

• protons

• electrons

• neutrons

• ions

Multiple Choice

The cloud-like space that electrons travel around:

• nucleus

• shell

• neutrons

• oort cloud

Multiple Choice

Which 2 particles are found in the nucleus of an atom?

• proton and electron

• neutron and proton

• electron and neutron

Multiple Choice

Why do the electrons surround the nucleus?

• the negative electrons are attracted to the neutral neutrons

• the negative electrons are repelled by the neutral neutrons

• the negative electrons are repelled by the positive protons

• the negative electrons are attracted to the positive protons

Multiple Choice

What subatomic particle is represented by this symbol (+):

• neutron

• proton

• electron

Multiple Choice

What is the definition of an atom?

• The smallest unit of matter that retains the properties of an element

• The total number of protons and neutrons in an atom

• 
  The number of protons in an atom determines its atomic number

• Each element is characterized by the number of protons in its nucleus

Multiple Choice

What is the purpose of the Periodic Table?

• To organize elements based on their properties and atomic numbers

• To describe the behavior and interactions of elements

• To break down elements into simpler substances

• To explain the atomic structure of elements

Number of Protons = Atomic number (Z)
Number of Electrons = number of protons
Number of Nuetrons = Mass number (A) - Atomic number (Z)

Multiple Choice

What is atomic number?

• proton number

• electron number

Multiple Choice

The fluorine atom has an atomic number of

• F

• 9

• 19

• 10

Multiple Choice

What is the mass number and atomic number ?

• Mass number = 7, atomic number = 14

• Mass number = 14.007, atomic number = 7

• Mass number = 14, atomic number = 7

• Mass number = 7, atomic number = 14.007

Multiple Choice

How many neutrons are there in one atom of magnesium?

• 12

• 24

• 6

• 24.305

Multiple Choice

Which element has an atomic number of 11?

• Sodium

• Lithium

• Aluminum

• Carbon

Multiple Choice

What is the atomic mass of Neon?

• 10

• 10.18

• 20.18

• 20

Multiple Choice

What is the mass number of Neon?

• 10

• 10.18

• 20.18

• 20

Multiple Choice

How many electrons does an Iodine atom have?

• 53

• 73

• 126

• 179

Multiple Choice

How many neutrons does an Oxygen atom have?

• 8

• 24

• 16

• 7.999

Multiple Choice

What is the atomic mass of Iron?

• 26

• 56

• 55.845

• 30

Multiple Choice

In an atom, what is the number of protons equal to?

• The number of electrons.

• The number of molecules.

• The number of neutrons.

• The number of nuclei.

Multiple Choice

Which of the following determines the type of element that an atom makes?

• The size of the nucleus.

• How much the atom weighs.

• The number of protons.

• The number of neutrons.

Multiple Choice

The number of neutrons equals...

• atomic number - mass number

• Electrons - protons

• Protons - neutrons

• mass number - atomic number

Isotopes

Always remember this:​

Proton = Atomic number (Z)
Electron = number of protons
Nuetron = Mass number (A) - Atomic number (Z)

​Isotopes of each other.

Multiple Choice

What is an isotope?

• A charged atom

• Two atoms of the same element with different amounts of neutrons

• Two atoms of the same element with different amounts of protons

• A neutral atom

Multiple Choice

What quantities vary between isotopes of an element?

• Neutrons and mass number

• Neutrons and electrons

• Protons, electrons, and atomic number

• Protons, electrons, and atomic mass

Multiple Choice

A neutral atom with atomic number 6 would have how many electrons?

• 3

• 6

• 1

Multiple Choice

Which two components of an atom contribute to the mass?

• Neutrons and electrons

• Protons and electrons

• Protons and neutrons

Multiple Choice

How many neutrons are in carbon-14?

• 6

• 8

• 10

• 12

Multiple Choice

Different isotopes have...

• different protons

• different atomic numbers

• different electrons

• different masses

Multiple Choice

How many neutrons does a Sodium-24 isotope have?

• 13

• 12

• 11

• 10

Multiple Choice

How many neutrons does a Calcium48 isotope have?

• 28

• 16

• 12

• 20

Multiple Choice

What is the name of the pictured isotope?

• Carbon-15

• Carbon-12

• Carbon-14

• Carbon-13

Multiple Choice

How many neutrons does a carbon-13 atom have?

• 6

• 5

• 7

• 8