理化课考试可以用英文称为 "physics and chemistry exam"。

理化课是指物理学和化学课程。在中文里，"理"是指物理学，"化"是指化学。考试是指在学校或其他教育机构里进行的测试学生知识和技能的测试。

下面是一些英文例句及其中文翻译：

I have a physics and chemistry exam next week. (我下周有一场理化课考试。)
I studied hard for the physics and chemistry exam, but I still didn't do very well. (我为理化课考试努力学习，但我仍然做得不是很好。)
The physics and chemistry exam covered a lot of material from the entire semester. (理化课考试涵盖了整个学期的大量材料。)
I'm nervous about the physics and chemistry exam because it counts for a large portion of my grade. (我对理化课考试感到紧张，因为它占我成绩的很大一部分。)