1) What is the center of an atom called? a) Nucleus b) Electron c) Proton d) Neutron 2) Which bond involves sharing electrons? a) Ionic bond b) Covalent bond c) Metallic bond d) Hydrogen bond 3) What is the charge of a proton? a) Positive b) Negative c) Neutral d) Variable 4) What type of bond is found in water molecules? a) Ionic bond b) Covalent bond c) Metallic bond d) Hydrogen bond 5) What is the chemical formula for water? a) H2O b) CO2 c) O2 d) H2 6) Which particle orbits the nucleus? a) Electron b) Proton c) Neutron d) Photon 7) What is the main solvent in biological systems? a) Water b) Alcohol c) Oil d) Acetone 8) Which bond is weakest? a) Ionic bond b) Covalent bond c) Metallic bond d) Hydrogen bond 9) What is the charge of an electron? a) Negative b) Positive c) Neutral d) Variable 10) What is the pH of pure water? a) 7 b) 5 c) 9 d) 3 11) What is the most abundant element in the universe? a) Hydrogen b) Oxygen c) Carbon d) Nitrogen 12) What is the state of water at 0°C? a) Solid b) Liquid c) Gas d) Plasma 13) What is the smallest unit of matter? a) Atom b) Molecule c) Compound d) Mixture 14) What is the charge of a neutron? a) Neutral b) Positive c) Negative d) Variable

Chemistry Basics Quiz

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