Quiz (After Chap 4 Test)

The word atom comes from Atomos, which is a Greek word that means _______.

• atom

• element

• indivisible

• molecules

Tags

NGSS.MS-PS1-1

Democritus believed that the smallest particles, were atomos, the Greek word for 

• small
• uncut or indivisible
• basic

Earth, Air, Fire, and Water were the fundamental elements propose by ___.

• Aristotle
• Democritus
• Plato
• Galileo

Dalton showed that common substances always broke down into _____

• the same elements in the same proportions
• elements in equal quantities
• hydrogen and oxygen
• earth, wind, water and fire

Tags

NGSS.MS-PS1-1

Who proposed that the atom consists mostly of empty space?

• Bohr
• Dalton
• Rutherford
• Chadwick

Rutherford referred to the center of the atom, where the mass was concentrated, as _____

• the center

• the nucleus

• the middle

Tags

NGSS.MS-PS1-1

What does the Bohr model suggest?

• Atoms are small, hard, indivisible objects. 
• That protons in the nucleus are attracted to electrons in the electron clouds. 
• That electrons travel around the nucleus of an atom in orbits or definite paths.

Bohr proposed a model of the atom as a large positive sphere with negatively charged electrons revolving around the center in orbits. What was this model nicknamed?

• The Planetary Model

• The Billiard Ball Model

• The Empty Space Model

• The Plum Pudding Model

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

• Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

• JJ Thomson, John Dalton, Ernest Rutherford, & Democritus

• Democritus, John Dalton, JJ Thomson, Ernest Rutherford.

• John Dalton, JJ Thomson, Democritus, & Ernest Rutherford

These particles have a mass of 1 amu

• protons and neutrons

• protons and electrons

• neutrons and electrons

Tags

NGSS.MS-PS1-1