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WorksheetsThe Atom & Subatomic Particles
Total questions: 10
Worksheet time: 5mins
What is the name of the table of all known elements? (Be careful of spelling)
(a)
Who was the Greek philosopher who is credited with coming up with the idea of atoms (he named them atomos, meaning "indivisible")?
Socrates
Democritus
Aristotle
Plato
Pythagoras
H2O is the chemical formula for water. How many atoms of Hydrogen make up one molecule of H2O?
Zero
One
Two
Three
Name ALL of the three main subatomic particles IN ALPHABETICAL ORDER. (Be careful of spelling)
(a)
What is the charge on an electron?
Positive
Negative
Neutral
What two subatomic particles are found in the nucleus of an atom?
Protons and electrons
Neutrons and electrons
Protons and neutrons
Protons, neutrons, and electrons
John Joseph Thompson's 1904 model of the atom was known as the "plum pudding model".
What were the "plums" meant to represent?
(Hint: this particle was discovered 7 years earlier, in 1897)
Protons
Electrons
Neutrons
Nuclei
Whose model of the atom first suggested that the atom was mostly empty space?
Ernest Rutherford
John Dalton
Albert Einstein
John Joseph Thompson
What type of particle was fired at gold atoms in Ernest Rutherford's 1909 experiment?
Alpha particles
Beta particles
Gamma rays
Water molecules
Who proved the existence of the neutron in 1932?
Isaac Newton
John Joseph Thompson
William Lawrence Bragg
James Chadwick
