Across
- 2. positively charged subatomic particle
- 4. negatively charged particle
- 5. ...model (model that states that the mass was concentrated at the centre of the atom and the nucleus was charged.
- 7. composed of protons and neutrons at the centre of every atom.
- 9. separation technique between solids and liquids.
- 12. element that reacts to form negative ions
- 13. column of periodic table
- 14. element in group 7
- 18. atom or molecule with an electric charge due to loss or gain of electrons
- 19. chemical reaction where a more reactive element swaps with a less reactive element in a compound.
- 21. substance made of 1 type of atom.
- 22. smallest part of an element that can exist.
- 24. atoms of the same element with a different number of neutrons.
Down
- 1. ... distillation is a method of separating a mixture according to their boiling points.
- 3. type of metal in group 1 of periodic table.
- 6. separating mixture of chemicals by distributing components between 2 phases.
- 8. substance made of 2 or more types of atoms chemically combined.
- 10. ... number is the number of protons in the nucleus.
- 11. ...metals (metallic elements in the middle of the periodic table.
- 15. ...gases (elements in group 0)
- 16. consists of 2 or more elements not chemically combined together.
- 17. atoms that react to form positive ions
- 20. ...table arranges elements
- 23. nuetral subatomic particles.