CustomExam Practice Test - 11/3/2025
A practice test for CustomExam
About This Test
This practice test is designed to help you prepare for the CustomExam exam. It contains 10 questions and has a time limit of 20 minutes.
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Important Questions
In which state of matter are particles tightly packed and vibrate in fixed positions?
What kind of bond results from the electrostatic attraction between oppositely charged ions?
What is the difference in the percentage of nitrogen and oxygen in dry air?
Which of the following best describes an exothermic reaction?
What is the general formula for alkenes?
What is the process of using electricity to decompose ionic substances called?
What is the pH range for acids?
Which of the following is not one of the main components of air?
What is the purpose of a catalyst in a chemical reaction?
Which gas is mainly responsible for the greenhouse effect?