Chell had a feeling that she would have to go through several more of these tests before she had a shot at defeating Wheatley... again. But she had done it once, and she could do it again.

As she entered the next room, she looked around again, trying to figure out what to do. She found white walls, in addition to a blue screen that neutralized portals. So, she began shooting portals around the walls, moving around to check out the situation.

There were no turrets, but there was the pool of acid, capable of dissolving her in an instant. She had been able to avoid it thus far, so it didn't concern her too much, but she worried about what would happen if GLaDOS succumbed to it. She wouldn't have a partner, then, to complete these tests, and she could be stuck, waiting for the laboratory to explode.

Eventually, Chell was able to make her way behind a blue screen, portaling up to the top where she found a white platform at an angle. Behind that was a conveniently-placed chasm where she could fall endlessly, thus building up speed if she wanted to pop into the air from the angled platform. However, she would need the help of GLaDOS, so she waited.