Across
- 4. Chadwick discovered the _____
- 7. Atoms are _____ in chemical reactions
- 11. A mixture that is not uniform
- 13. An element that has a mass of 16.00 g/mol
- 16. A substance that dissolves into another substance
- 17. The sharing of electrons
- 18. How close a measured value is to an accepted value
- 19. Atoms of the same element with different numbers of neutrons
- 20. He discovered the electron
Down
- 1. The transition of a substance directly from solid to gas
- 2. A procedure in which the concentration of a solution is determined by comparing it to a solution of known concentration
- 3. Who discovered the nucleus of an atom
- 5. Atoms are______
- 6. How close a series of measurements are to each other
- 8. Two protons and two neutrons called an alpha particle
- 9. An acid that donates more than one proton per molecule
- 10. The concave or convex surface of a liquid
- 12. The mass of an atom given in amu
- 14. The transfer of electrons
- 15. The change in heat of the products from the reactants