15 Questions
Which subatomic particle is negatively charged?
Electron
What is formed when two or more atoms form chemical bonds with each other?
Molecules
Which of the following distinguishes one element from another?
Atomic number
Which type of formula gives the simplest whole-number ratio of the different atoms in a compound?
Empirical formula
What are atoms made up of?
Protons, electrons, and neutrons
Which of the following represents compounds using symbols to show the types of atoms and their ratios in a chemical compound?
Chemical formulas
Which of the following is NOT a diatomic molecule?
Carbon dioxide (CO₂)
What is the net charge of an atom or molecule that loses two electrons?
Positive two (+2)
Which law of matter states that a given compound always contains the same elements in the same proportions by mass?
Law of Definite Proportions
What is the net electric charge of an ion that gains three electrons?
Negative three (-3)
What is the chemical formula for glucose?
C₆H₁₂O₆
Which of the following elements exists in nature as a diatomic molecule?
Fluorine (F)
According to the Law of Conservation of Mass, what happens to matter during a chemical reaction?
Matter remains unchanged
What is the net electric charge of an ion that loses four electrons?
Positive four (+4)
What is the chemical formula for water?
H₂O
Test your knowledge of atoms, molecules, ions, Dalton's Atomic Theory, isotopes, and the basic laws of matter. This quiz covers topics such as the formulation of Dalton's Atomic Theory, atomic number, mass number, isotopic symbols, and distinguishing elements.
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