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Introduction to Atoms
Introduction to Atoms
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Chapter 4 quiz
Flashcards
25 cards
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Questions
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Answers
1
Who stated that elements combine in specific ratios to form compounds?
Rutherford
Bohr
Democritus
Dalton
2
Who performed the gold foil experiment?
Bohr
Democritus
Heisenberg
Rutherford
3
Who proposed electrons are found in clouds around the nucleus?
Modern theory
Dalton
Democritus
Rutherford
4
The sub atomic particle that is found in the nucleus and has a positive charge is the ?
neutron
proton
electron
isotope
5
The sub atomic particle that is found in the nucleus and has no charge is the ?
ion
proton
neutron
electron
6
An atom has no overall charge if it contains equal numbers of
none of the above
electrons and protons
neutrons and protons
neutrons and electrons
7
The following is a Bohr diagram of which element?
Fluorine
Silicon
Beryllium
Oxygen
8
Which element has 6 neutrons?
Boron
Hydrogen
Lithium
Carbon
9
Who discovered the electron?
John Dalton
Neils Bohr
J.J. Thomson
Democritus
10
Who performed the cathode-ray tube experiment?
Thomson
Rutherford
Dalton
Bohr
11
The smallest particle into which an element can be divided and still be the same substance
Mixture
Colloid
Compound
Atom
12
The sub atomic particle that is found outside the nucleus and has a negative charge
Electron
Proton
Neutron
Ion
13
How do you calculate the number of neutrons in an element?
Divide the Atomic # by the Atomic mass
Add the Atomic # to the Atomic Mass
Multiply Atomic # by Atomic mass
Subtract the Atomic # from the Atomic mass
14
What particle(s) make up the nucleus?
protons and neutrons
electrons and neutrons
electrons and protons
neutrons
15
Who proposed the atom is uncuttable?
Modern Theory
Democritus
J.J. Thomson
John Dalton
16
Who discovered the nucleus?
Rutherford
Democritus
Dalton
Thomson
17
Aluminum has _____ electrons?
13
40
27
14
18
The following is a Bohr diagram of what element?
Oxygen
Cobalt
Boron
Sodium
19
Who stated that electrons orbit the nucleus on specific energy levels?
Democritus
Thomson
Bohr
Schrodinger
20
Who stated that all substance are made of atoms?
Democritus
J.J. Thomson
John Dalton
Ernest Rutherford
21
Which of the following determines the identity of an element?
mass number
atomic mass
atomic number
overall charge
22
Who stated that electrons jump from one level to the next?
Bohr
Thomson
Democritus
Schrodinger
23
Which element has an atomic mass of 24?
Oxygen
Magnesium
Chromium
Scandium
24
Who proposed that the atom is mostly empty space?
Rutherford
Heisenberg
Bohr
Dalton
25
Who stated atoms of the same element are the same and atoms of different elements are different
Dalton
Bohr
Democritus
Schrodinger
