1. the scientist had an ardent interest in chemistry.
endless
passionate
waning
intelligent
2. after much cajoling, the baby took her nap.
laughing
demanding
coaxing
deliberation
3. his refusal to compromise left them at an impasse.
situation
quandary
conflict
deadlock
4. witnessing the accident left her pallid and breathless.
pale
sick
shocked
nauseous
5. during the night, the situation remained static.
unchanging
charged
volatile
mysterious

1 passionate
2. coaxing
3. deadlock
4. pale
5. unchanging

1. The scientist had an ardent interest in chemistry.

The word "ardent" means enthusiastic or passionate.

2. After much cajoling, the baby took her nap.

The word "cajoling" means to persuade someone to do something by coaxing or flattery.

3. His refusal to compromise left them at an impasse.

The word "impasse" describes a situation where no progress is possible, especially because of a disagreement. Another word for this would be a deadlock.

4. Witnessing the accident left her pallid and breathless.

The word "pallid" means someone has a pale face. It is typically used to refer to someone in bad health. It can also mean feable or insipid.

5. During the night, the situation remained static.

"Static" has many definitions, but in this context it means there is no movement, action, or change. Therefore, it is unchanging.