Across
- 2. change a change in which a new chemical substance forms
- 6. atoms of the same element that have a different numbers of neutrons
- 8. reaction a process in which chemical change takes place
- 11. Oxides and hydroxides of metals
- 12. the physical change from solid to liquid
- 13. a unit of two or more atoms held together by covalent bonds
- 16. another name for a positive ion
- 17. a very tiny piece of matter making up everything
- 19. soluble bases
- 21. they can be drawn out into wires
- 23. a chemical that shows by its colour whether a substance is acidic or alkaline
- 24. a mixture obtained when a solute is dissolved in a solvent
- 25. a starting chemical for a reaction
- 26. a substance that allows heat or electricity to pass through it easily
- 28. a poor conductor of heat or electricity
- 30. does not react easily
Down
- 1. substance containing only one type of atom; it can't be broken
- 3. can be bent and pressed into shape
- 4. a substance in which two or more elements are chemically combined
- 5. a solution with a low amount of solute dissolved in a solvent
- 7. non metal compounds in water
- 9. a solution with a high amount of solute dissolved in a solvent
- 10. a reaction with acid that gives water as well as a salt
- 14. : a charged atom or group of atoms formed by the gain or loss of one or more electrons
- 15. the smallest particles that we can't break down any further
- 18. a mixture where at least one other substance is added to a metal to improve its property
- 20. a chemical made in a chemical reaction
- 22. reacts with substances it comes into contact with
- 27. the process in which particles mix by colliding with eachother and bouncing off in all directions
- 29. another name for a negative ion