Q: Q: All elements are most stable when their outermost shell is filled with electrons according to which rule? A:

OPTIONS:
- quartet rule
- string rule
- coupling rule
- octet rule

A: octet rule

input: OPTIONS:
- basic
- component
- contrast
- compound Now, answer this question: Q: What refers to a substance made from two or more elements joined by chemical bonds? A:
A:
output: compound

Q: Evolution occurs because of changes in what over time? A:

OPTIONS:
- mitochondria
- genomes
- atoms
- alleles

Answer: alleles

Problem: OPTIONS:
- ribosome
- mitochondria
- genome
- chloroplast
Q: Q: What structure, containing many internal membranes, is the site of photosynthesis? A:
Answer: chloroplast

Problem:OPTIONS:
- erosion
- diffraction
- flux
- superposition

Q: Deeper layers of rock must be older than layers closer to the surface, this is the law of what? A:
****
A: superposition

Problem:OPTIONS:
- carbonates
- particles
- molecules
- hydrocarbons

Q: What compounds contain only carbon and hydrogen? A:
****
A:
hydrocarbons