Introducing the Atom

Multiple Choice

What is the smallest particle of an element that still has the properties of that element?

• Molecule

• Atom

• Compound

• Mixture

Multiple Choice

What is the simplest form of matter?

• Compound

• Mixture

• Element

• Solution

Multiple Choice

Which element is represented by the symbol 'H'?

• Helium

• Hydrogen

• Hafnium

• Holmium

Multiple Choice

Which of the following is NOT a property of an element?

• It can be broken down into simpler substances.

• It is the simplest form of matter.

• It consists of only one type of atom.

• It retains its properties in a compound.

Multiple Choice

What does the Greek word "atomos" mean?

• Invisible

• Indivisible

• Infinite

• Incomparable

Multiple Choice

What are elements made of according to John Dalton?

• Atoms with different masses

• Atoms with the same mass

• Molecules with different masses

• Molecules with the same mass

Multiple Choice

What are compounds according to John Dalton?

• Atoms of the same element, combined

• Atoms of different elements, combined

• Molecules of the same element, combined

• Molecules of different elements, combined

Multiple Choice

What year did JJ Thomson develop the "Plum Pudding" model?

• 1904

• 1911

• 1898

• 1920

Multiple Choice

What type of particles are embedded in the "Plum Pudding" model?

• Positively charged particles

• Neutrons

• Negative particles

• Protons

Multiple Choice

Who discovered that the number of protons is unique to each element?

• Niels Bohr

• Schrödinger

• Henry Moseley

• Heisenberg

Multiple Choice

Which electrons have the most energy?

• Electrons closest to the nucleus

• Electrons in the outermost shell

• Electrons in shells further from the nucleus

• Neutron Electrons

Multiple Choice

What is the nucleus described as?

• The super-dense, super-tiny center

• The large, hollow center

• The light, airy center

• The simple, small center

Multiple Choice

Where are protons located in an atom?

• In the electron cloud

• In the nucleus

• Outside the nucleus

• In the outer shell

Multiple Choice

Which subatomic particle is neutral and found in the nucleus?

• Electron

• Neutron

• Proton

• Positron

Multiple Choice

What is required to hold the nucleus together due to the repulsive force between protons?

• A small amount of energy

• No energy

• An insane amount of energy

• A moderate amount of energy