Identification: Plant Identification

I'm having lots of fun finding plants at my new house as they emerge and flower. I have a few that I would like help identifying.

1. Small plant with little yellow flowers.

2. Plant about 2 feet tall with purple flowers.

3. Shrub about 2 feet tall now. It looks like it needs some pruning to shape it better. It has small green leaves. The new growth on the tips is a dark purple. No flowers so far.

4. An interesting vine I found among the trees. It has a thin woody stem that has wound around another tree's branch. About 5 feet up it has broad green leaves and small yellow and orange trumpet shaped flowers.

 

2 is spiderwort.

 

Corydalis
Tradescantia
Lonicera nitida 'Red Tip'
Lonicera ciliosa

 

Thank you for your help.