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Chemistry Quiz
Chemistry · Easy
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 layer protects Earth from UV radiation?
- A. Dust layer
- B. Oxygen layer
- C. Ozone layer
- D. Carbon layer
-
What is the chemical name for common table salt?
- A. Calcium Carbonate
- B. Magnesium Sulfate
- C. Potassium Nitrate
- D. Sodium Chloride
-
What is the term for a large molecule composed of many repeating subunits called monomers?
- A. Isomer
- B. Polymer
- C. Enzyme
- D. Catalyst
-
Which gas is the primary byproduct of the complete combustion of fossil fuels and is the most significan't human-contributed greenhouse gas?
- A. Methane
- B. Nitrous Oxide
- C. Carbon Dioxide
- D. Ozone
-
Who developed the Three Laws of Motion?
- A. Newton
- B. Einstein
- C. Pascal
- D. Galileo
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Which element exists in several allotropic forms including diamond, graphite, and fullerenes?
- A. Silicon
- B. Sulfur
- C. Carbon
- D. Phosphorus
-
What is the chemical molecule of heredity?
- A. ATP
- B. DNA
- C. RNA
- D. Protein
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Which group of elements on the periodic table is characterized by being chemically inert and having a full valence shell?
- A. Alkali Metals
- B. Halogens
- C. Noble Gases
- D. Actinides
-
What is the chemical formula for Ozone?
- A. O4
- B. O2
- C. O
- D. O3
-
Which law states that for every action there is an equal and opposite reaction?
- A. Newton's 3rd Law
- B. Newton's 1st Law
- C. Newton's 2nd Law
- D. Law of Gravity
-
What is the term for a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist?
- A. Bohr Model
- B. Lewis Structure
- C. Phase Diagram
- D. Reaction Coordinate
-
The process of 'rusting' is a common example of which type of chemical reaction?
- A. Oxidation
- B. Reduction
- C. Acid-Base
- D. Substitution
-
What is the chemical symbol for Iron?
- A. In
- B. F
- C. Ir
- D. Fe
-
What is the chemical symbol for Silver?
- A. Sr
- B. Si
- C. Au
- D. Ag
-
Which rock is formed from the transformation of existing rock?
- A. Sedimentary
- B. Metamorphic
- C. Igneous
- D. Lava
-
Which element has the atomic number 1?
- A. Carbon
- B. Oxygen
- C. Hydrogen
- D. Helium
-
What is the term for a chemical bond formed by the electrostatic attraction between oppositely charged ions?
- A. Covalent Bond
- B. Metallic Bond
- C. Ionic Bond
- D. Hydrogen Bond
-
What type of chemical reaction releases energy, usually in the form of heat or light, into its surroundings?
- A. Endothermic
- B. Exothermic
- C. Synthesis
- D. Decomposition
-
Who is credited with the creation of the first periodic table that successfully predicted the properties of undiscovered elements?
- A. John Dalton
- B. Dmitri Mendeleev
- C. Antoine Lavoisier
- D. Ernest Rutherford
-
Which triatomic molecule, found high in the Earth's atmosphere, protects the planet by absorbing most of the Sun's harmful ultraviolet radiation?
- A. O2 (Dioxygen)
- B. O3 (Ozone)
- C. CO2
- D. N2