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Chemistry Questions
Subcategories of science of matter and energy:
Total questions: 98086
Why is it a bad idea to freeze water in a plastic container?Popularity: 281
What safety rules should be followed in a science laboratory?
Popularity: 217
How much does one gallon of salt water weigh?
Popularity: 202
Why are the oceans salty?
Popularity: 156
If using muriatic acid do the fumes rise or stay near the ground without air movement?
Popularity: 139 | New Update
What are the uses of alcohol lamps?
Popularity: 100
How can you find the number of protons and electrons and neutrons in an atom or ion?
Popularity: 95
Can you use muriatic acid to clean out your pipes?
Popularity: 89
What good things does ozone do?
Popularity: 87
What is the importance and impact of chemistry on people society and technology?
Popularity: 83
What is zero degrees Kelvin?
Popularity: 80
Why is snow white and water transparent but sometimes ice can be both?
Popularity: 77
How does the elevation and air pressure affect the boiling point of water?
Popularity: 77
Who are some famous foreign chemists and what are their contributions to the field of science?
Popularity: 76
How do you determine if a bond is non-polar covalent or polar covalent or ionic?
Popularity: 74
What affects the rate of a chemical reaction?
Popularity: 71
What are the names and uses of the various laboratory tools?
Popularity: 70
What is air pressure at sea level in all the different units of pressure?
Popularity: 70
How do you solve Ideal Gas Law problems?
Popularity: 68
Why haven't chemists created a periodic table of compounds?
Popularity: 66
What are the vertical columns or families or groups in the periodic table?
Popularity: 65
How do fireworks work?
Popularity: 65
How do you solve all different types of chemistry problems?
Popularity: 64
How do you count the valence electrons of an atom?
Popularity: 64
How do you draw Lewis dot structures?
Popularity: 63
What is plastic made from?
Popularity: 63
How did hydrogen obtain its chemical symbol?
Popularity: 63
What is the modern periodic law of the elements?
Popularity: 63
What is the metric unit for liquid volume?
Popularity: 63
How do you determine if a molecule is polar or non-polar?
Popularity: 62
How do you prepare the sodium perchlorate solution and how will it behave in hydrochloric acid medium?
Popularity: 62
What is the octet rule in chemistry?
Popularity: 62
What chemical and molecular effect does sugar have on water?
Popularity: 62
What does it mean that acids donate hydrogen ions while bases accept them?
Popularity: 61
What are practical uses of calcium?
Popularity: 61
What is the relationship between melting point and atomic radius?
Popularity: 60
How do you write a balanced chemical reaction?
Popularity: 60
How can the Bohr model of atomic structure be used to explain the reactivity of the alkali metals?
Popularity: 59
Is baking soda the same as muriatic acid?
Popularity: 59
Which alkali metal has no known uses?
Popularity: 58
How do you find the pH of a strong acid solution?
Popularity: 57
How do you balance a reduction-oxidation or redox reaction?
Popularity: 57
Why does fire need oxygen?
Popularity: 57
What is the lowest and highest number of shared and unshared atoms in a unit cell of a FCC structure and a simple cubic structure?
Popularity: 57
What is the difference between an acid and a base?
Popularity: 57
What is ether?
Popularity: 57
What is the Bohr model of the atom?
Popularity: 56
How much does a gallon of milk weigh?
Popularity: 56
How do you solve stoichiometry problems?
Popularity: 55
How do you determine the shape of a molecule?
Popularity: 55
How do you calculate the molality of a solution?
Popularity: 55
What is the Lewis dot structure of methane?
Popularity: 54
How does the polarity of water allow it to effectively dissolve ionic compounds?
Popularity: 54
What is inside a fire extinguisher?
Popularity: 54
How do you write a net ionic equation?
Popularity: 54
What are two types of vaporization?
Popularity: 54
How do you find the pH of a strong base solution?
Popularity: 53
Why does boron form a tripositive ion?
Popularity: 53
Do all explosions produce carbon dioxide?
Popularity: 52
What is the structural formula of periodic acid?
Popularity: 51
Who are some Filipino scientists?
Popularity: 50
What is the freezing temperature of alcohol?
Popularity: 50
Why is water a special substance in the metric system?
Popularity: 50
Although Dalton's atomic theory was rejected at first he used his theory to do what that soon resulted in his theory being accepted by scientists?
Popularity: 49
Who are some famous foreign scientists and what are their contributions to the fields of science?
Popularity: 49
What is the freezing temperature of wine?
Popularity: 49
What is a surfactant?
Popularity: 49
Where does arsenic come from?
Popularity: 48
What is the temperature difference between a yellow flame and a blue flame?
Popularity: 47
What is the structure of hex-1-yn-4-one?
Popularity: 47
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