Problem: OPTIONS:
- Gases
- liquids
- energies
- solids
Q: Q: In what state of matter are particles rigidly fixed in space and held tightly to neighboring particles? A:
Answer: solids

Problem:OPTIONS:
- carbonate gas
- helium gas
- hydrogen gas
- greenhouse gas

Q: What type of gas levels in the atmosphere are increasing? A:
****
A: greenhouse gas

Q: As a polycrystalline material solidifies, grains with irregular shapes form. the interfaces between grains constitute grain what? A:
OPTIONS:
- waves
- patterns
- obstacles
- boundaries
boundaries

Q: What type of climates are found around the equator? A:
OPTIONS:
- arid
- tundras
- arctics
- tropical

Answer: tropical

Question: Q: Red giants are stars that fuse what element into larger atoms? A:
OPTIONS:
- carbon
- hydrogen
- oxygen
- helium
Answer: helium

input: OPTIONS:
- cellular compounds
- atomic compounds
- electromagnetic compounds
- molecular compounds Now, answer this question: Q: Inorganic chemical compounds can be broadly classified into two groups: ionic compounds and which other group? A:
A:
output:
molecular compounds