Chemistry Summer 2024

Match the following

• Used gold foil method

• Thompson's Plum Pudding

• The atom is indivisible but can combine

• Dalton's Atom

• Electrons found at different levels.

• Rutherford's Nuclear Atom

• Electrons move around in an orbit

• Bohr's Model

• Small electrons embedded in positive

• Quantum Mechanical Model

Atoms have 3 main subatomic particles: Protons, Electrons, and Neutrons. The protons and neutrons are found in the

(a)  

Draw and label an atom. Must include 3 subatomic particles and the charges.

Atoms have 3 main subatomic particles: Protons, Electrons, and Neutrons. The electrons are found in the

(a)  

Draw the correct Bohr atom for Beryllium-11. Beryllium has an atomic number of 4.

Label ALL subatomic particles.

Copper exists as a mixture of two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu. Copper-65 is 30.83% abundant and it has a mass of 64.9278 amu. Calculate the atomic mass of copper.

Calculate the atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundances of 27.9769 amu (92.2297%), 28.9765 amu (4.6832%) and 29.9738 amu (3.0872%).

If an element has 6 protons, 7 neutrons, and 6 electrons. Which element is it?

• Nitrogen

• Carbon

• Fluorine

• Boron

Which letter represents a proton?

• A
• B
• C
• D

Label this atom's particles.

a

b

c

d

Electrons

Nucleus

Protons

Neutrons