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WorksheetsMidterm - Part 3
Total questions: 25
Worksheet time: 25mins
He was the Greek philosopher who believed that all matter is composed of very small, indivisible particles, which he named atomos.
Heraclitus
Democritus
Anaximenes
Empedocles
He was the scientist who formulated a precise definition of atom.
John Dalton
Joseph John Thomson
Ernest Rutherford
James Chadwick
He was the scientist who discovered electron, the negatively charge particle of an atom.
John Dalton
Joseph John Thomson
Ernest Rutherford
James Chadwick
He was the scientist who discovered proton, the positively charge particle of an atom.
John Dalton
Joseph John Thomson
Ernest Rutherford
James Chadwick
He was the scientist who measured the charge of an electron.
Joseph Proust
John Dalton
Ernest Rutherford
Robert Andrews Millikan
He was the scientist who discovered neutron, the neutral particle of an atom.
John Dalton
Joseph John Thomson
Ernest Rutherford
James Chadwick
Atomic Number (A) is the number of protons in the nucleus of each atom of an element.
TRUE
FALSE
Mass Number (Z) is the number of electrons and protons present in the nucleus of an atom of an element.
TRUE
FALSE
What is the statement number one of Dalton's Atomic Theory?
Elements are composed of extremely small particles called atoms.
A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction.
Compounds are composed of atoms of more than one element. In any compound, the ratio of the numbers of atoms of any two of the elements present is either an integer of a simple fraction.
All atoms of a given element are identical. The atoms of one element are different from the atoms of all other elements.
What is the statement number four of Dalton's Atomic Theory?
Elements are composed of extremely small particles called atoms.
A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction.
Compounds are composed of atoms of more than one element. In any compound, the ratio of the numbers of atoms of any two of the elements present is either an integer of a simple fraction.
All atoms of a given element are identical. The atoms of one element are different from the atoms of all other elements.
What is the statement number two of Dalton's Atomic Theory?
Elements are composed of extremely small particles called atoms.
A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction.
Compounds are composed of atoms of more than one element. In any compound, the ratio of the numbers of atoms of any two of the elements present is either an integer of a simple fraction.
All atoms of a given element are identical. The atoms of one element are different from the atoms of all other elements.
What is the statement number three of Dalton's Atomic Theory?
Elements are composed of extremely small particles called atoms.
A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction.
Compounds are composed of atoms of more than one element. In any compound, the ratio of the numbers of atoms of any two of the elements present is either an integer of a simple fraction.
All atoms of a given element are identical. The atoms of one element are different from the atoms of all other elements.
Dalton's Atomic Theory statement number four supports the law of ______________________________.
Multiple Proportion
Conservation of Mass
Definite Proportion
Constant Composition
Dalton's Atomic Theory statement number three supports the law of ______________________________.
Multiple Proportion
Conservation of Mass
Definite Proportion
Constant Composition
Definite Composition
What are the three basic subatomic particles?
Proton
Lepton
Neutron
Quark
Electron
If we were to analyze samples of carbon dioxide gas obtained from different sources, we would find in each sample the same ratio of mass of carbon to oxygen.
TRUE
FALSE
There are different compounds that are made up of the same elements but differ in the number of atoms of each kind that combine.
TRUE
FALSE
John Dalton attempted to describe the structure or composition of atoms.
TRUE
FALSE
Series of investigations and experimentation led to the discovery of the internal structure of the atom.
TRUE
FALSE
Atom is the basic unit of ____________.
Life
Body
Matter
World
The experiment that led to the discovery of electron.
Plum Pudding Experiment
Oil Drop Experiment
Gold Foil Experiment
Cathode Ray Tube Experiment
The experiment that led to the discovery of proton.
Plum Pudding Experiment
Oil Drop Experiment
Gold Foil Experiment
Cathode Ray Tube Experiment
The experiment that led to the measurement of the charge of the electron.
Plum Pudding Experiment
Oil Drop Experiment
Gold Foil Experiment
Cathode Ray Tube Experiment
Matter can neither be created nor destroyed.
TRUE
FALSE
To maintain electric neutrality, an atom must contain an equal number of positive and negative charges.
TRUE
FALSE
