WorksheetsChapter 6 Review - Junior Science
Total questions: 20
Worksheet time: 10mins
One of the first people to state that matter is made up of atoms was
Democritus
Aristotle
Dalton
Dalton’s model of the atom is best described as
A solar system
Plum pudding
A solid sphere
Who provided the first evidence that atoms contain subatomic particles?
Dalton
Thomson
Rutherford
Almost all the mass of an atom is located in its
Protons
Electrons
Nucleus
An electron is a particle with
A negative charge, found in the nucleus.
A positive charge, found in the nucleus.
A negative charge, found outside the nucleus.
Which particle is the least massive?
Proton
Electron
Neutron
All atoms of an element have the same
Mass number
Atomic number
Number of isotopes
The number of neutrons in an atom equals the
Mass number minus the atomic number.
Atomic number plus the number of electrons.
Atomic number minus the mass number.
The atomic number of sulfur is 16. How many electrons are in an atom of sulfur-34?
16
18
34
J.J. Thomson demonstrated that electrons
Have a negative electric charge
Have a positive electric charge
Do not have an electric charge
According to Dalton’s atomic theory, an atom is
Made of smaller particles
A particle with a positive charge.
In constant motion.
Electrons in the first energy level of an atom
Have no energy
Have the lowest possible energy
Have the highest possible energy
What is the Atomic Number of Carbon?
6
12.011
C
6.011
What is the Atomic Mass of Carbon?
6
C
6.011
12.011
How many electrons does Carbon have?
C
6.011
12.011
6
Which scientist said "atoms are small and sphere shaped"?
Democritus
Dalton
Thomson
Rutherford
Bohr
Which scientist named atoms "atomos"?
Democritus
Dalton
Thomson
Rutherford
Bohr
Which scientist found that atoms are mostly positive with negatives spread throughout?
Democritus
Dalton
Thomson
Rutherford
Bohr
Which scientist said the nucleus is huge and positively charged?
Democritus
Dalton
Thomson
Rutherford
Bohr
Which scientist called the atom "the solar system model"?
Democritus
Dalton
Thomson
Rutherford
Bohr
