Skip to content Home Questions Play Progress Daily Challenge Questions › Chemistry Questions QUESTION Identify an example of plasma as a state of matter. Open question → QUESTION Glucose has formula C₆H₁₂O₆. Using C = 12, H = 1 and O = 16, what is its percentage by mass of carbon? Open question → QUESTION Calculate the oxidation number of sulfur in H₂S₂O₇. Open question → QUESTION Which listed scientist gave the element oxygen its name? Open question → QUESTION At standard temperature and pressure (STP), the value of temperature is: Open question → QUESTION Which listed process helps atmospheric gases enter water and move through it to aquatic organisms? Open question → QUESTION One mole of aluminium sulphate, Al₂(SO₄)₃, contains how many moles of oxygen atoms? Open question → QUESTION The table lists the arrows and their labels in four proposed state-change diagrams. Which diagram labels every change correctly? A dash means that direction… Open question → QUESTION In the introductory particle model, which statements about the gaseous state are correct? I. Gas particles move rapidly and freely throughout the available volume.… Open question → QUESTION Identify the chemical formula of potassium hydroxide. Open question → QUESTION Identify the chemical formula of ammonium hydroxide. Open question → QUESTION In the introductory particle model of the ordinary states of a substance, inter-particle attractions are strongest in _____ and weakest in _____. Open question → QUESTION Which statement correctly explains the factors affecting the physical state of matter? Open question → QUESTION Which of the following gases is known as “Laughing Gas”? Open question → QUESTION Ferrum is the Latin name for ___. Open question → QUESTION Which of the following is the correct chemical formula of sodium aluminate? Open question → QUESTION Calcium hypochlorite is commonly known as: Open question → QUESTION Which historical name was used for secondary zinc ores containing zinc carbonate and hydrous zinc silicate? Open question → QUESTION Which of the following is the scientific name of the mineral called chromite? Open question → QUESTION Which of the following compound-name/formula pairs is correct? I. Calcium oxide — Ca₂O II. Aluminium oxide — Al₂O₃ Open question → QUESTION Which of the following is the formula of barium peroxide. Open question → QUESTION In standard organic-chemistry laboratory usage, which listed mixture is called soda lime? Open question → QUESTION What is the conventional formula of borax, sodium tetraborate decahydrate? Open question → QUESTION Which organic compound has formula CH₃OC₆H₅ and is used in fragrance and solvent applications? Open question → Home Questions Play Progress 