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Chemistry Quiz
Chemistry · Medium
20 questions · Unlimited attempts · Free online practice
Chemistry is the science that explains what everything around us is made of and how substances change. From the air we breathe and the water we drink to medicines, food, and modern...
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All 20 questions in this Chemistry quiz
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Which separation technique is based on differences in the boiling points of the components in a liquid mixture?
- A. Filtration
- B. Distillation
- C. Chromatography
- D. Decan'tation
-
What is the main cause of acid rain?
- A. Planting trees
- B. Burning fossil fuels
- C. Nuclear power
- D. Solar flares
-
Which type of solid is characterized by a continuous 3D network of covalent bonds, such as in diamond or quartz?
- A. Molecular Solid
- B. Ionic Solid
- C. Covalent Network Solid
- D. Metallic Solid
-
Which periodic trend describes the energy required to remove an electron from a gaseous atom, which generally increases from left to right across a period?
- A. Electronegativity
- B. Ionization Energy
- C. Electron Affinity
- D. Atomic Radius
-
What is the unit of concentration defined as the number of moles of solute per liter of solution?
- A. Molality
- B. Normality
- C. Molarity
- D. Mass Percent
-
Which element is used in the manufacture of matches?
- A. Sulfur
- B. Magnesium
- C. Phosphorus
- D. Potassium
-
According to the Kinetic Molecular Theory, the temperature of a gas is a direct measure of what?
- A. The potential energy of the atoms
- B. The average kinetic energy of the particles
- C. The total mass of the gas
- D. The pressure exerted on the container
-
Which is a major source of water pollution?
- A. Rocks
- B. Fish
- C. Rain
- D. Fertilizer runoff
-
Which acid is present in an ant's sting?
- A. Acetic Acid
- B. Formic Acid
- C. Malic Acid
- D. Citric Acid
-
In chemistry, one 'mole' of a substance contains approximately how many elementary entities (Avogadro's number)?
- A. 3.14 x 10^23
- B. 6.022 x 10^23
- C. 9.81 x 10^23
- D. 1.602 x 10^23
-
What is the atomic number of Carbon?
- A. 6
- B. 8
- C. 4
- D. 12
-
What is the main component of Biogas?
- A. Methane
- B. Butane
- C. Ethane
- D. Propane
-
What is the process of rusting?
- A. Reduction
- B. Hydration
- C. Carbonation
- D. Oxidation
-
Which nuclear process involves the splitting of a heavy atomic nucleus into two or more smaller nuclei, releasing a massive amount of energy?
- A. Nuclear Fusion
- B. Nuclear Fission
- C. Alpha Decay
- D. Electron Capture
-
Which laboratory technique is used to determine the unknown concentration of a solute in a solution by reacting it with a known concentration of another?
- A. Distillation
- B. Titration
- C. Filtration
- D. Centrifugation
-
Which chemical property describes the tendency of an atom to attract a shared pair of electrons towards itself in a covalent bond?
- A. Ionization Energy
- B. Electronegativity
- C. Electron Affinity
- D. Atomic Radius
-
Why is water (H2O) considered a 'polar' molecule?
- A. It can exist in three states
- B. It has an asymmetrical shape and an uneven distribution of electron charge
- C. It contains only ionic bonds
- D. It freezes at zero degrees Celsius
-
What is the primary chemical difference between a saturated and an unsaturated fat?
- A. The number of oxygen atoms
- B. The presence of at least one double bond between carbon atoms
- C. The total mass of the molecule
- D. The type of hydrogen used
-
What is the chemical formula for Baking Soda?
- A. Na2CO3
- B. NaHCO3
- C. NaOH
- D. NaCl
-
What is the chemical formula for Chalk?
- A. CaO
- B. Ca(OH)2
- C. CaCl2
- D. CaCO3