If you had physics and chemistry in high school, then you can refresh your memory here with questions about the speed of sound and light.
You can also be quizzed about what symbol is used about carbon dioxide and what the Latin term is for lead, uranium, mercury, and gold.
Here are questions about the periodic table and about the sun and its fate when it reaches approx. 5 billion years old and has used up all of its hydrogen.
Here are more than 200 questions to challenge yourself and others in.