Q: What crystals consist of molecules at the lattice points of the crystal, held together by relatively weak intermolecular forces? Choices: - quartz crystals - salt crystals - healing crystals - molecular crystals A:
molecular crystals

Q: What is a simple sugar such as fructose or glucose? Choices: - disaccharide - polysaccharides - galactose - monosaccharide A:
monosaccharide

Q: In the past, what colliding with planet earth has caused many organisms to die off? Choices: - acid rain - meteorites - the Sun - asteroids A:
asteroids

Q: The periodic table is an arrangement of the elements in order of increasing what? Choices: - gravity numbers - metallic numbers - negative numbers - atomic numbers A:
atomic numbers