Across
- 1. A table that shows the elements arranged by atomic number
- 5. The force that attracts a body toward the center of the earth
- 7. A reaction where heat is absorbed
- 11. A function that reverses another function
- 13. A number that cannot be expressed as a fraction
- 15. A positively charged ion
- 17. A high-energy state of matter
- 18. A mathematical statement that two expressions are equal
Down
- 2. A subatomic particle with a negative charge
- 3. The force that opposes motion
- 4. A unit of measure for angles
- 6. The rate of change of velocity
- 8. A measure of disorder or randomness
- 9. The amount of matter in an object
- 10. The energy possessed by a body due to its motion
- 12. A substance that speeds up a chemical reaction
- 14. The smallest unit of a chemical element
- 16. A triangle with two equal sides