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Created on 3rd August 2025
What is the atomic number of Carbon? |
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Which of the following is a chemical change? |
What is the pH level of pure water at 25 degrees Celsius? |
Which of the following elements is a noble gas? |
What type of bond is formed when electrons are shared between atoms? |
Which of the following represents a balanced chemical equation? |
What is the term for a substance that increases the rate of a chemical reaction? |
In the reaction 2H2 + O2 → 2H2O, what is the role of O2? |
What is the main gas produced during cellular respiration? |
What is the chemical formula for table salt? |