Chemistry 9 Chapter 4: Atomic Structure Quiz

What does the term 'atomos' mean?

• Cannot be divided

• Made of separate particles

• Discrete particles

Who invented the Plum Pudding Model?

• E. Rutherford

• J. Dalton

• J.J. Thomson

• E. Schrodinger

Whose atomic model is this?

• E. Rutherford

• J. Dalton

• J.J. Thomson

• E. Schrodinger

What is the Law of Definite Proportion?

• Compounds are formed by elements in specific mass ratios

• Atoms combine in small, whole number ratios

• Elements can be divided into smaller particles

• Atoms of one element are different from atoms of other elements

According to Dalton's Atomic Model, atoms are:

• Indivisible and can't be created or destroyed

• Divisible and can be created or destroyed

• Made up of protons, neutrons, and electrons

• Composed of different elements

What did Thomson's experiments with cathode rays lead to?

• Discovery of electrons

• Discovery of protons

• Discovery of neutrons

• Discovery of atomic nucleus

What did Thomson conclude about atoms based on his observations of electrons?

• Atoms contain smaller, negatively charged particles

• Atoms are indivisible and can't be created or destroyed

• Atoms have different masses for different elements

• Atoms combine in small, whole number ratios

What did Rutherford's gold foil experiment reveal?

• Atoms have a dense, positively charged nucleus

• Atoms have a dense, negatively charged nucleus

• Atoms have a neutral nucleus

• Atoms have a dense, neutral nucleus

What is the atomic number of an element?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the nucleus

• The sum of protons and neutrons in the nucleus

What are isotopes?

• Atoms with the same number of protons but different number of neutrons

• Atoms with the same number of protons and neutrons

• Atoms with different number of protons and neutrons

• Atoms with different number of protons but same number of neutrons