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WorksheetsMeasurement of Matter (Recall Part 1)
Total questions: 10
Worksheet time: 5mins
________ inferred from his research that ‘there is no rise or drop in the weight of the matter during a chemical reaction.’
French scientist J. L. Proust
French Scientist Antoine Lavoisier
Dalton
Berzelius
________ stated that “The proportion by weight of the constituent elements in the various samples of a compound is fixed,”
Antoine Lavoisier
J. L. Proust
Dalton
Berzelius
Atomic radius is expressed in __________
millimetres
centimetres
micrometres
nanometres
Which of the above atoms is larger in size than the other?
Magnesium
Aluminium
Which of the above atoms is smaller in size than the other?
Calcium
Potassium
Atomic mass number = _____________
protons + neutrons
protons + electrons
number of protons
number of neutrons
The relative mass of a _________ atom which has only one proton in its nucleus was accepted as one (1).
nitrogen
oxygen
hydrogen
helium
_____________ has now been accepted as the unit of atomic mass.
Relative mass
Unified mass
The current method of choosing chemical symbols is based on the method invented by __________.
Dalton
Berzelius
Antoine Lavoisier
J. L. Proust
IUPAC stands for __________
International Union of Pure and Applied Chemistry
Indian Union of Pure and Applied Chemistry
International Union of Physics and Applied Chemistry
International Union of Physics and Application of Chemistry
