Science Quiz Bee G12

Which process is responsible for the formation of heavier elements in stars?

• Nuclear fusion

• Radioactive decay

• Nuclear fission

• Chemical reaction

What does the atomic number of an element represent?

• Number of protons in an atom

• Number of neutrons in an atom

• Number of electrons in an atom

• Atomic mass

Which of the following molecules is non-polar?

• H₂O

• CH₄

• NH₃

• HCl

What type of intermolecular force exists between water molecules?

• Dipole-dipole interactions

• London dispersion forces

• Hydrogen bonding

• Ionic bonding

Which macromolecule is primarily responsible for the storage of genetic information?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

How does increasing temperature generally affect the rate of a chemical reaction?

• Decreases the rate

• Increases the rate

• Has no effect

• Depends on the catalyst

What is the primary energy source in fossil fuels?

• Solar energy

• Chemical energy from ancient organic matter

• Nuclear energy

• Geothermal energy

Which cleaning agent ingredient is commonly found in bleach?

• Sodium chloride

• Sodium hypochlorite

• Ammonia

• Ethanol

What is the primary role of enzymes in biological systems?

• Serve as energy storage

• Speed up chemical reactions

• Provide structural support

• Transport molecules across membranes

What kind of bond results from the unequal sharing of electrons between atoms?

• Ionic bond

• Polar covalent bond

• Non-polar covalent bond

• Metallic bond