GCSE

notes has a summary of cold war textbook and what Is needed to know to get a passing grade in the exam

GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED What does 'aq' mean? - answer Aqueous - it is dissolved in water Water - formula - answer H20 Ammonia - formula - answer NH3 Carbon Dioxide - formula - answer CO2 Hydrogen - formula - answer H2 Chlorine - formula - answer Cl2 Oxygen - formula - answer O2 Ammonium (ion) - formula - answer NH4 (+) Hydroxide (ion) - formula - answer OH (-) Nitrate (ion) - formula - answer NO3 (-) Carbonate (ion) -...

GCSE AQA Triple Chemistry Paper 1 2024/2025 QUESTIONS AND CORRECT ANSWERS ALREADY PASSED C8 1) What is required for a reaction to happen? - answer a successful collisions C8 2) How can you use a graph to calculate the rate of reaction? - answer calculate gradient (on a curve tangent) C8 3) What four things can speed up the rate of reaction? - answer temperature, concentration, surface area and catalyst C8 11) What formula is used to calculate the rate of reaction? - answer amount of ...

GCSE Computer Science (OCR) Question and Answer 100% Correct Arithmetic Logic Unit (ALU) - Performs operations on data e.g. Addition, subtraction - CPU - Central Processing Unit Control Unit (CU) - Coordinating activities of the CPU Registers - Quick, small stores of data within the CPU Memory Address Register (MAR) - Holds memory address for data or a instruction about to be used by the CPU Memory Data Register (MDR) - Holds actual data or instruction Accumulator - Stores results of ...

Buffer stock - ANSWER-A stock of raw materials held in reserve to protect the production process from unforeseen shortages. Customer loyalty - ANSWER-The likelihood that past customers will continue to buy from the business, enhanced by high quality customer service and/or reward programme. Customer satisfaction - ANSWER-Whether customers are pleased with the goods/services they receive; whether they would purchase again. Flow production - ANSWER-Using a production line to make goods co...

What does a nucleus do? - ANSWER-It contains genetic material and controls the activities of the cell What does cytoplasm do? - ANSWER-It's a gel-like substance where most of the chemical reactions happen. It contains enzymes that control these chemical reactions What does a cell membrane do? - ANSWER-It holds the cell together and controls what goes in and out What do mitochondria do? - ANSWER-These are where most of the reactions for aerobic respiration occur. Respiration transfers e...

Eukaryotic cells - ANSWER-Plant and animal cells What characteristics eukaryotic cells? (3) - ANSWER-Cell membrane, cytoplasm and genetic material enclosed in a nucleus Prokaryotic cells - ANSWER-Bacterial cells What characteristics prokaryotic cells? (4) - ANSWER-1. much smaller in comparison 2. have a cytoplasm and cell membrane surrounded by cell wall 3. genetic material is a single DNA loop not enclosed in a nucleus 4. may be 1 or more small rings of DNA called plasmids Millim...

What is homeostasis? - ANSWER-The maintenance of a constant internal environment. What is a stimulus? - ANSWER-A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - ANSWER-Detect the stimulus or change in environment. What happens after the receptors? - ANSWER-Receptors send messages to the CNS via the sensory neurone. What makes up the central nervous system? - ANSWER-The brain or spinal c...

Aim - ANSWER-The intention to reach a goal. Asset - ANSWER-Something the business owns; it has a value. Air pollution - ANSWER-The presence or introduction of harmful substances into the air causing disease, allergies or damage to humans, animals, plants or the built environment. Advertising - ANSWER-A method of communicating information about the product; the business pays for advertising time/space. Consumer law - ANSWER-Laws designed to ensure that businesses make products that ar...