1,766 free study cards across 10 topics, written to the AQA specification. Study them as flashcards or multiple choice, and rate each one Got it, Almost or Forgot.
Every card is tagged to a topic in the AQA GCSE Chemistry specification, so you can revise one topic at a time.
Three cards from the deck, as you will see them in BrainBerry: the question, the answer, and an explanation of why.
What was the main gas thought to be present in the Earth's early atmosphere?
Carbon dioxide.
Carbon dioxide was released in huge amounts by volcanoes, and most of it stayed in the atmosphere until the oceans formed and photosynthesis began.
What is the atom economy of a reaction that has only one product?
100%.
All of the mass of the reactants ends up in the one product, so none is wasted as a by-product.
What three raw materials is soda-lime glass made from?
Limestone, sand and sodium carbonate.
Chemistry only. Soda-lime glass is the most common type of glass, used for windows and bottles.
Practise the June 2024 and 2025 AQA Chemistry papers question by question. Every question on the paper has its own set of BrainBerry flashcards and multiple-choice cards, testing the same content and skills, each with an explanation.
The cards are written by BrainBerry to match each question; they are not the exam board's own wording.
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