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6. the reactivity of the halogens ____ going down the group
- decreases
- increases
- stays the same
7. Why are transition metals useful as building materials, often as alloys?
- They are strong and dense
- they are strong and not malleable
- they are weak and bad conductors of heat
8. Transition metals only react slowly or not at all with ____ at ordinary tempertures
- oxygen and water
- hyrdogen and oxygen
- water and hydrogen
9. (halogen)At room temperture chlorine is a
- red-brown liquid
- green gas
- pale yellow gas
- grey solid
10. Transition metals are often ___ coloured
11. Halogens have ____ melting and boiling point
12. as the halogen group goes down the boiling and melting points ______
- stay the same
- increase
- decrease
13. Transition models are found between group ___ and ___
14. Transition metals form ____ ions with various chages
- positive
- negative
- neutral
15. (exepct for mercury), transition metals have a ____ melting and boiling points than the alkali metals
16. the halogens bond ______ with non-metals, forming molecules
- metalically
- covalently
- ionically
17. the halogens form ionic compounds with metals in which the halide ions have a chage of
18. (halogen) at room temperture bromine is a
- pale yellow gas
- red-brown liquid
- grey solid
- green gas
19. Transition metals are much ____ reactive
20. the halogens are in group