AQA GCSE CHEMISTRY KEY WORDS VERIFIED ANSWERS
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AQA GCSE CHEMISTRY KEY WORDS VERIFIED ANSWERS 1. What type of solution has a pH level that is low due to the presence of hydrogen ions? Answer: Acid. 2. What is the energy required to start a chemical reaction? Answer: Activation energy. 3. What type of solution has a pH level that is high due to the presence of hydroxide ions? Answer: Alkali. 4. Which metals are known for their high reactivity and are found on the left side of the periodic table? Answer: Alkali metals. 5. What...