MCQ

Q1. What type of chemical reaction involves the combination of two or more substances to form a single, more complex compound?a) Decomposition reactionb) Synthesis reactionc) Single displacement reactiond) Double displacement reaction Q2. Which type of chemical reaction involves the breakdown of a single compound into two or more simpler substances?a) Decomposition reactionb) Synthesis reactionc) Single […]

Q1. Which chemical group is characterized by the presence of a hydroxyl (-OH) functional group?a) Aldehydeb) Carboxylc) Hydroxyld) Amino Q2. Which chemical group consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group?a) Aldehydeb) Ketonec) Carboxyld) Hydroxyl Q3. What chemical group contains a carbon atom double-bonded to an oxygen

Q1. What type of chemical bond involves the sharing of electron pairs between atoms?a) Ionic bondb) Covalent bondc) Metallic bondd) Hydrogen bond Q2. Which of the following statements about ionic bonds is true?a) Ionic bonds involve the sharing of electron pairs between atoms.b) Ionic bonds occur between two nonmetal atoms.c) Ionic bonds are formed by

Q1. What subatomic particle carries a positive electrical charge?a) Neutronb) Electronc) Protond) Photon Q2. What is the term for the central part of an atom that contains protons and neutrons?a) Electron cloudb) Nucleusc) Electron shelld) Energy level Q3. What subatomic particle has a negligible mass and a negative electrical charge?a) Protonb) Neutronc) Electrond) Photon Q4.

Q1. What is an element?a) A substance that cannot be broken down into simpler substances by chemical meansb) A compound formed by the combination of two or more elementsc) A molecule composed of atoms bonded together by covalent bondsd) A type of ion formed by gaining or losing electrons Q2. How many naturally occurring elements

Q1. Which of the following represents the correct definition of a molecule?a) A single atom bonded to another atomb) A group of atoms held together by ionic bondsc) Two or more atoms chemically bonded togetherd) A substance composed of multiple elements Q2. What type of bond holds the atoms together in a molecule?a) Ionic bondb)

Q1. What is the charge of a proton?a) Positiveb) Negativec) Neutrald) Variable Q2. What is the charge of an electron?a) Positiveb) Negativec) Neutrald) Variable Q3. What is the charge of a neutron?a) Positiveb) Negativec) Neutrald) Variable Q4. Which subatomic particle determines the identity of an element?a) Protonb) Neutronc) Electrond) Positron Q5. Which of the following

Q1. What is the subatomic particle with a positive charge found in the nucleus of an atom?a) Electronb) Neutronc) Protond) Nucleon Q2. What is the total number of electrons in a neutral atom of carbon?a) 4b) 6c) 8d) 12 Q3. Which subatomic particle has a negligible mass and orbits the nucleus of an atom in

Q1. How are ionic compounds formed?a) Sharing of electrons between atomsb) Transfer of electrons between atomsc) Mixing of elements in a solutiond) Random collision of atoms Q2. Which process is responsible for the formation of most chemical compounds?a) Condensationb) Sublimationc) Chemical reactiond) Dissolution Q3. How do covalent bonds form?a) Transfer of electrons between atomsb) Sharing

Q1. Which of the following is NOT a state of matter?a) Solidb) Liquidc) Gasd) Plasma Q2. The process of a solid turning directly into a gas without passing through the liquid state is called:a) Sublimationb) Vaporizationc) Condensationd) Evaporation Q3. What is the boiling point of water in Celsius?a) 0°Cb) 100°Cc) 273°Cd) 212°C Q4. Which of