Across
- 2. This property of metal means it can be moulded into different shapes
- 4. In a flame test Lithium turns the flame what colour?
- 6. An alkane with 2 carbons
- 8. Atomic ..... is the number of protons and neutrons added together, it is the larger number by the symbol in the periodic table
- 9. Sodium .......... an example of a strong alkali
- 11. This element is in group 1, period 3
- 12. Arch, whorl, composite and ..... are patterns found in fingerprints
- 13. Thermochromatic materials change colour in response to changes in what?
- 14. The name of group 7 in the periodic table
- 17. The charge of a proton
- 23. Red ......... a vegetable that can be used to make an indicator to test acids and alkalis
- 24. The longest chain fraction extracted from crude oil, used to tarmac road surfaces.
- 26. A hazard symbol with an exclamation mark
- 27. To test for carbon dioxide you use this, it will turn from colourless to cloudy white
Down
- 1. In a flame test this metal turns the flame brick red
- 3. Colour of universal indicator in a neutral (pH 7)solution
- 5. A reaction between an acid and a base that forms salt and water
- 7. To test for this gas you use a lit splint and it will burn with a squeaky pop
- 9. Extracted from crude oil, these compounds contain hydrogen and carbon only.
- 10. Nanoparticles are used in what product? Hint you use it on holiday.
- 15. A type of reaction where temperature rises
- 16. This type of bonding is always between a metal and a non metal
- 18. A powder used to dust finger prints on a white surface is called ....... black.
- 19. In a flame test what colour does potassium turn the flame?
- 20. This metal is top of the reactivity series in our specification (the one you need to learn the order of!)
- 21. This element contains 6 protons, 6 neutrons and 6 electrons
- 22. The colour blue litmus paper turns in acid
- 25. A pH ........ is more accurate to indicator paper as it gives a numerical value of pH to 2 decimal places