Atomic History/sub atomic particle quiz

Early views of matter are best described as

• random and chaotic
• fixed and unchanging
• scientific and empirical
• philosophical and speculative

What was alchemy trying to find? Choose all that apply

• how to change lead into gold

• Elixir of Life
• universal solvent

• Alchemy of Light

In the early 1800s Dalton named tiny particles atoms, what was his idea of what an atom was like?

• Atoms are indivisible, solid spheres that combine in fixed ratios.
• Atoms can be created and destroyed in chemical reactions.
• Atoms are fluid and can change shape easily.
• Atoms are made of smaller particles called protons and neutrons.

What did Crooke's green glowing cathode ray tube show about electrons?

• Electrons have no charge at all.
• Electrons are larger than protons.
• Electrons are negatively charged particles.
• Electrons are positively charged particles.

Why did the JJ Thompson's plum pudding model of the atom make sense? (chose all that apply)

• The model explained ions rand electricity.

• The model claimed that all atoms are made up of only positive charges.
• It suggested that electrons orbit the nucleus like planets around the sun.
• The model makes sense because the attraction between + and - particles would hold the atom together.

What is true for the neutron's role in the nucleus?

• Neutrons are responsible for the chemical properties of elements.
• Neutrons have no effect on the stability of the nucleus.
• Neutrons stabilize the nucleus by reducing repulsion between protons.

• Neutrons increase the repulsion between protons in the nucleus.

Rutherford fired alpha particles at gold foil. From the results he concluded

• Atoms are solid and uniform throughout.
• Gold atoms are larger than alpha particles.
• Atoms have a small, dense nucleus and are mostly empty space.
• Alpha particles can pass through any material without interaction.

Match the charge and location with the particles

• 3 quarks

• neutrally charged particle located in the nucleus

• neutron

• positive charged particle located in the nucleus

• proton

• particle smaller than a proton or neutron that makes up both

• electron

• negatively charged particle located outside of the nucleus

Order the particles by mass (heaviest to lightest)

• proton

• electron

• neutron

Which is true about a proton?

• A proton has a positive charge and is found in the nucleus of an atom.
• A proton has a negative charge and orbits the nucleus of an atom.
• A proton is a type of electron found outside the nucleus.
• A proton is neutral and does not contribute to the mass of an atom.