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 hig...
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 type of hydrocarbon contains only single bonds between carbon atoms?
Answer: Alkanes.
6. What type of hydrocarbon contains double bonds between carbon atoms?
Answer: Alkenes.
7. What is a mixture of atoms that results in distorted layers that cannot slide past each other?
Answer: Alloy.
, 8. Which electrode is positively charged in electrolysis?
Answer: Anode.
9. What is the mixture formed when a soluble substance is added to water?
Answer: Aqueous solution.
10. What is the smallest unit of matter, composed of protons, neutrons, and electrons?
Answer: Atom.
11. What is the number of protons present in an atom?
Answer: Atomic number.
12. What is a base that will react with an acid to form a salt as one of the products?
Answer: Base.
13. Which materials can be broken down by microorganisms into simpler substances?
Answer: Biodegradable materials.
14. What type of fuel is made from animal or plant products?
Answer: Biofuel.
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