Across
- 1. splitting of nucleus
- 3. study of matter and energy and the interactions between them
- 5. He stated that mass is neither created nor destroyed
- 7. A system's ability to do work.
- 9. chemical species formed by two or more atoms that share chemical bonds such that they form one unit.
- 13. anything that has mass and occupies volume
- 14. A molecule that has gained or lost one or more electrons from its neutral state and therefore possesses a negative or positive electric charge.
- 17. the one who arranged the periodic table elements according to their atomic mass
- 19. force multiplied by distance or the amount of energy needed to move a mass against a force.
- 20. an ion with a negative electrical charge.
- 21. Argon is the name for the element with atomic number 18 and is represented by the symbol Ar
- 25. an ion of oxygen with an oxidation state equal to 2- (e.g., iron oxide).
- 28. SI unit of pressure equal to the force of 1 Newton per square meter.
- 29. involves the emission of energetic particles of an atom
- 30. emitted energy in the form of rays, waves, or particles.
- 31. any substance that increases the rate of a reaction without itself being consumed.
- 32. mass per unit volume.
- 34. covalent bonds formed by overlapping of outer orbitals of adjacent atoms.
- 36. a standard used for comparison in measurements
- 37. an electrical charge, a conserved property of subatomic particles determining their electromagnetic interaction.
- 38. amount of matter a substance contains or property of matter that resists acceleration.
- 40. A positively charged ion.
- 42. outer electron most likely to participate in bond formation or a chemical reaction.
- 46. SI unit of energy equal to the kinetic energy of a 1 kg mass moving at 1 m/s.
- 47. Metal + Non – Metal
- 49. sharing of electron
Down
- 2. A substance that is made up of two or more chemically bonded elements.
- 4. X-rays are light rays with a wavelength from 0.01 to 1.0 nanometers.
- 6. a substance that cannot be subdivided using chemical means; identified by the number of protons in its atoms.
- 8. the one responsible for the entirety of chemical phenomena
- 10. it is the ability to attract electrons
- 11. chemical mass unit equal to 6.022 x 1023 molecules, atoms, or other particles
- 12. a precious shiny grayish-white metal, the chemical element of atomic number 47.
- 15. equal sharing of electron
- 16. chemical bond in which two electron pairs are shared between two atoms.
- 18. the mass of a single atom of a chemical element.
- 22. a push or pull on a mass, with both magnitude and direction (vector).
- 23. class of fat-soluble molecules, also known as oils and fats
- 24. state of matter characterized by having neither a defined shape nor defined volume
- 26. the force on a mass due to the acceleration of gravity (mass multiplied by acceleration).
- 27. crude oil; natural flammable hydrocarbon mixture found in geologic formations.
- 28. large molecule made of rings or chains of repeated monomer subunit
- 33. particle in the atomic nucleus that has a mass of 1 and charge of 0
- 35. energy that flows between matter samples because of a temperature difference.
- 39. maximum amount of solute that may be dissolved in a specified solute
- 41. the mixture of gases that make up the Earth's atmosphere
- 43. Calcium is the name for the element with atomic number 20 and is represented by the symbol Ca.
- 44. a chemical link formed between atoms in molecules and molecules and ions in crystals.
- 45. a chemical species that accepts electrons or donate protons or hydrogen ions.
- 48. Oxygen is the name for the element with atomic number 8 and is represented by the symbol O