Q: Salts of weak acids or bases can affect the acidity or what of their aqueous solution? Choices: - atomicity - compound - ductility - basicity A:
basicity

Q: What are algae that live in colonies of hundreds of cells called? Choices: - chlorophyta - euglenids - rhodophyta - volvox A:
volvox

Q: What term refers to the friction of fluid, within itself and its surroundings? Choices: - elasticity - volume - salinity - viscosity A:
viscosity