Basic Units of Matter Quizz 1. What are the building blocks of matter? Compound Molecules Atoms ElementQuestion 1 of 102. How do atoms usually exist in nature? In the form of molecules In the form of ions In the free state In the form of molecules and IonsQuestion 2 of 103. Which atom is the smallest atom of all? Lithium Helium Hydrogen CarbonQuestion 3 of 104. Which of the following can be used to see atoms? Scanning tunneling microscope Microscope Most powerful microscope Optical microscopeQuestion 4 of 105. The number of atoms present in one molecule of an element is called as: Empirical formula Molecule Atomicity CompoundQuestion 5 of 106. Out of the following, which one is an example of a molecule of a compound? Water molecule Oxygen molecule Ozone Nitrogen moleculeQuestion 6 of 107. Cl2 stands for: 2 molecules of chlorine 2 atoms of chlorine 2 ions of chlorine 3 molecule of chlorineQuestion 7 of 108. Which constituent of air is monoatomic? Argon Water vapour Oxygen NitrogenQuestion 8 of 109. Molecules can exist in free state because: They are very stable. They are electrically charged. They are very reactive. They are bigger in size as compared to atoms.Question 9 of 1010. Which is the smallest particle of an element that can take part in a chemical reaction? Molecule Mixture Compound AtomQuestion 10 of 10 Loading…
