Atomic Theory Review

Who proposed the hypothesis that all matter can be cut in half to a point where it is indivisible, and what is left are "atomos"?

• A) Aristotle

• B) Democritus

• C) Plato

• D) Socrates

What did Democritus base his hypothesis on?

• A) Experiments

• B) Thought

• C) Observations

• D) Measurements

According to Democritus, what do the properties of "atomos" depend on?

• A) Their color and size

• B) Their shapes, the amount of space between them, and how they moved

• C) Their weight and density

• D) Their temperature and pressure

Who came up with the first Atomic Theory in 1807?

• Isaac Newton

• John Dalton

• Albert Einstein

• Niels Bohr

According to Dalton's Atomic Theory, what is matter made up of?

• Energy waves

• Solid indivisible spheres called atoms

• Continuous matter

• Fluids

What did Dalton's Atomic Theory state about atoms of the same element?

• They are different in mass and properties

• They are identical in mass and properties

• They can be created or destroyed

• They cannot combine to form compounds

According to Dalton's Atomic Theory, what happens to atoms in chemical reactions?

• They are destroyed

• They are created

• They are rearranged

• They remain unchanged

Which of the following statements is true according to Dalton's Atomic Theory?

• Atoms can be created or destroyed

• Atoms of different elements cannot combine

• Atoms are rearranged in chemical reactions

• Matter is made up of continuous matter

According to Thompson, what is the composition of atoms?

• Atoms are made of a positive charge substance containing scattered negatively charged particles

• Atoms are made of a negative charge substance containing scattered positively charged particles

• Atoms are made of only positively charged particles

• Atoms are made of only negatively charged particles

What is the name of Thompson's model of the atom?

• Solar System model

• Plum pudding model

• Nuclear model

• Quantum model