Chemistry Challenge QuizVersión en línea Test your knowledge of chemistry fundamentals with this fun quiz! por Elizabeth Oduor 1 What is the basic unit of matter? a Molecule b Element c Atom d Compound 2 Which particle has a positive charge? a Photon b Neutron c Proton d Electron 3 What is the chemical formula for water? a O2H b HO2 c H2O2 d H2O 4 What is the pH level of pure water? a 7 b 14 c 0 d 10 5 Which gas is essential for respiration? a Carbon Dioxide b Nitrogen c Hydrogen d Oxygen 6 What is the periodic table used for? a Measuring temperature b Organizing elements c Calculating mass d Identifying compounds 7 What type of bond involves the sharing of electrons? a Covalent bond b Metallic bond c Hydrogen bond d Ionic bond 8 Which element is represented by the symbol 'Na'? a Neon b Sodium c Nickel d Nitrogen 9 What is the process of a solid turning into a gas called? a Melting b Sublimation c Condensation d Evaporation 10 What is the main gas in Earth's atmosphere? a Argon b Nitrogen c Carbon Dioxide d Oxygen
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