Across
- 2. at a temperature where liquid turns into gas
- 3. a force that is invisible that attracts any two objects with mass towards each other
- 5. made up of 2 or more existing parts or elements
- 7. a measure of how quickly a specific material is easily capable to catch fire or burning
Down
- 1. a small particle that is found in all atoms
- 4. a unit of chemical elements
- 6. how much stuff packed into a certain amount of space