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Chemistry Quiz
Chemistry · Expert
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
-
Which acid is present in an ant's sting?
- A. Acetic Acid
- B. Formic Acid
- C. Malic Acid
- D. Citric Acid
-
What is the term for a species that is at risk of extinction?
- A. Invasive
- B. Endangered
- C. Endemic
- D. Common
-
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
-
Which element is used in the manufacture of matches?
- A. Sulfur
- B. Magnesium
- C. Phosphorus
- D. Potassium
-
What is the process of rusting?
- A. Reduction
- B. Hydration
- C. Carbonation
- D. Oxidation
-
What is the chemical name for Vitriol?
- A. Copper Sulfate
- B. Sulfuric Acid
- C. Zinc Sulfate
- D. Iron Sulfate
-
What is the chemical formula for Chalk?
- A. CaO
- B. Ca(OH)2
- C. CaCl2
- D. CaCO3
-
Which element exists in several allotropic forms including diamond, graphite, and fullerenes?
- A. Silicon
- B. Sulfur
- C. Carbon
- D. Phosphorus
-
What is the main source of plastic pollution in oceans?
- A. Forest fires
- B. Industrial smoke
- C. Acid rain
- D. Land-based waste
-
When an acid reacts with a base, what are the two typical products of this 'neutralization' reaction?
- A. Oxygen and Sugar
- B. Salt and Water
- C. Carbon Dioxide and Heat
- D. Hydrogen and Metal
-
What is the name of the analytical technique used to separate a mixture of chemical substances into its individual components based on their different speeds through a stationary phase?
- A. Titration
- B. Spectroscopy
- C. Chromatography
- D. Mass Spectrometry
-
Which rock is formed from the transformation of existing rock?
- A. Sedimentary
- B. Metamorphic
- C. Igneous
- D. Lava
-
What is the atomic number of Carbon?
- A. 6
- B. 8
- C. 4
- D. 12
-
What is the pH level of acid rain usually?
- A. Below 5.6
- B. Above 7
- C. Exactly 14
- D. Exactly 7
-
What is the force that opposes motion?
- A. Gravity
- B. Friction
- C. Inertia
- D. Tension
-
What is the main cause of acid rain?
- A. Planting trees
- B. Burning fossil fuels
- C. Nuclear power
- D. Solar flares
-
Who proposed the first modern atomic theory in the early 1800s, suggesting that all matter is composed of small, indivisible particles called atoms?
- A. J.J. Thomson
- B. John Dalton
- C. Ernest Rutherford
- D. Niels Bohr
-
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 name of a solution that resists changes in pH when small amounts of an acid or a base are added?
- A. Saturated Solution
- B. Buffer Solution
- C. Colloidal Solution
- D. Supercritical Fluid
-
What is the term for the time required for half of the radioactive atoms in a sample to decay?
- A. Decay Constant
- B. Half-life
- C. Mean Life
- D. Isotope Period