Practice the essential concepts of matter, atomic structure, chemical reactions, bonding and everyday applications of chemistry.
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Which element is used in making transistors and computer chips?
According to the collision theory, reaction rate increases when:
Which type of reaction in organic chemistry involves replacing a hydrogen atom with another atom or group?
What is the chemical formula for laughing gas used as a mild anaesthetic in dentistry?
Which type of chemical formula shows the simplest whole number ratio of atoms in a compound?
Which particle determines the chemical properties of an element?
Which process involves passing an electric current through a solution to cause a chemical reaction?
Which organic functional group is present in carboxylic acids?
Which gas is used in fire extinguishers to smother flames by displacing oxygen?
What is saponification in chemistry?
What is the chemical name of the compound with formula Na2SO4?
Which type of chemical formula shows the actual number of atoms in a molecule?
What is the chemical formula for ethanol the type of alcohol found in beverages?
Which of the following is the strongest acid?
What is the chemical formula for ethanoic acid commonly found in vinegar?
What is the chemical formula for washing soda used in cleaning?
Which type of isomerism involves the same molecular formula but different structural arrangements?
What is the valency of carbon that makes it the basis of organic chemistry?
What type of oxide typically forms when a non-metal reacts with oxygen?
Which type of bond involves the sharing of electron pairs?