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GCSE Chemistry Paper 1 Practice Exam Fully Solved 2024.
What is an *atom*? - Answer smallest part of an element What is an *element*? - Answer a substance that contains only one type of atom What are *chemical symbols*? - Answer - the letter or pair of letters that represents an element. - first letter is always capitalized What are *compounds*? - Answer substances in which atoms of two or more elements, which are chemically combined What is a *chemical formula*? - Answer a combination of symbols that shows the ratio of element...
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What is an *atom*? - Answer smallest part of an element What is an *element*? - Answer a substance that contains only one type of atom What are *chemical symbols*? - Answer - the letter or pair of letters that represents an element. - first letter is always capitalized What are *compounds*? - Answer substances in which atoms of two or more elements, which are chemically combined What is a *chemical formula*? - Answer a combination of symbols that shows the ratio of element...
GCSE Chemistry Paper 2 Test Questions And Answers Graded A+ 2024.
How do you measure the rate of a reaction? - Answer By measuring the quantity of a reactant used or the quantity of product formed over time What is the equation for calculating the mean rate of a reaction by measuring the amount of reactant used? - Answer Mean rate of reaction = quantity of reactant used/time taken What is the equation for calculating the mean rate of a reaction by measuring the amount of product formed? - Answer Mean rate of reaction = quantity of product formed/ti...
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How do you measure the rate of a reaction? - Answer By measuring the quantity of a reactant used or the quantity of product formed over time What is the equation for calculating the mean rate of a reaction by measuring the amount of reactant used? - Answer Mean rate of reaction = quantity of reactant used/time taken What is the equation for calculating the mean rate of a reaction by measuring the amount of product formed? - Answer Mean rate of reaction = quantity of product formed/ti...
GCSE Chemistry - Chemical Changes Prep Exam Well Answered 100% 2024.
Oxidation - Answer Loss of electrons Reduction - Answer Gain of electrons Displacement reaction - Answer When a more reactive element takes the place of a less reactive element in a compound Redox reaction - Answer A reaction where both oxidation and reduction occur Acid - Answer Substance that produces hydrogen ions (H⁺) in water Alkali - Answer Substance that produces hydroxide ions (OH⁻) in water Strong acid - Answer An acid which is fully ionised (split in...
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Oxidation - Answer Loss of electrons Reduction - Answer Gain of electrons Displacement reaction - Answer When a more reactive element takes the place of a less reactive element in a compound Redox reaction - Answer A reaction where both oxidation and reduction occur Acid - Answer Substance that produces hydrogen ions (H⁺) in water Alkali - Answer Substance that produces hydroxide ions (OH⁻) in water Strong acid - Answer An acid which is fully ionised (split in...
GCSE Chemistry - Paper 1 Exam Questions And Correct Answers 2024.
What is the charge of a proton? - Answer +1 What is the charge of a neutron? - Answer 0 What is the charge of an electron? - Answer -1 What is the relative mass of a proton? - Answer 1 What is the relative mass of a neutron? - Answer 1 What is the relative mass of an electron? - Answer Very small How many types of atoms do elements contain? - Answer Only one type What are compounds? - Answer Substances containing two or more different elements that are chemic...
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What is the charge of a proton? - Answer +1 What is the charge of a neutron? - Answer 0 What is the charge of an electron? - Answer -1 What is the relative mass of a proton? - Answer 1 What is the relative mass of a neutron? - Answer 1 What is the relative mass of an electron? - Answer Very small How many types of atoms do elements contain? - Answer Only one type What are compounds? - Answer Substances containing two or more different elements that are chemic...
OCR A Level Biology Test Papers Solved Correctly Latest Bundle 2024!
1 Exam (elaborations) Biology OCR A level paper 1 Prep Exam And Actual Answers 2024. 2 Exam (elaborations) Meiosis 3 Exam (elaborations) OCR A Level Biology Module 4 - Communicable Diseases Exam And Answers Rated A+ 2024. 4 Exam (elaborations) OCR A Level Biology Biological Membranes Midterm Exam With Solved Solutions 2024.
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- OCR Biology A Level- Biological Molecules Study Exam And Answers Graded A+ 2024. • Exam (elaborations)
- OCR AS Level Biology Classification and Evolution Practice Exam And Actual Answers 2024. • Exam (elaborations)
- OCR A Level Biology The Liver Exam And Answers Graded A+ 2024. • Exam (elaborations)
- OCR A Level Biology - Module 3 Final Exam And Correct Answers 2024. • Exam (elaborations)
- OCR A Level Biology Respiration Test Questions With Solved Solutions 2024. • Exam (elaborations)
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1 Exam (elaborations) Biology OCR A level paper 1 Prep Exam And Actual Answers 2024. 2 Exam (elaborations) Meiosis 3 Exam (elaborations) OCR A Level Biology Module 4 - Communicable Diseases Exam And Answers Rated A+ 2024. 4 Exam (elaborations) OCR A Level Biology Biological Membranes Midterm Exam With Solved Solutions 2024.
Meiosis
Prophase 1 - Answer -Chromosomes condense -Nuclear envelope disintegrates -Homologus chromosomes pair up and cross ov Metaphase 1 - Answer -Homologous pairs line up -Independent assortment Anaphase 1 - Answer -Homologous chromosomes pulled to opposite poles -Chromatids stay joined together Telophase 1 - Answer -Homologous chromosomes assemble at each poll and nuclear membrane reforms Prophase 2 - Answer -Chromosomes condense -Spindle formation Metaphase 2 - Answ...
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Prophase 1 - Answer -Chromosomes condense -Nuclear envelope disintegrates -Homologus chromosomes pair up and cross ov Metaphase 1 - Answer -Homologous pairs line up -Independent assortment Anaphase 1 - Answer -Homologous chromosomes pulled to opposite poles -Chromatids stay joined together Telophase 1 - Answer -Homologous chromosomes assemble at each poll and nuclear membrane reforms Prophase 2 - Answer -Chromosomes condense -Spindle formation Metaphase 2 - Answ...
OCR A Level Biology Module 4 - Communicable Diseases Exam And Answers Rated A+ 2024.
Pathogen - Answer An organism that causes disease Examples of pathogens - Answer Bacteria Protoctists Fungi Viruses Communicable Diseases - Answer Diseases that can spread between organisms Diseases caused by bacteria - Answer Tuberculosis Bacterial meningitis Ring Rot Diseases caused by viruses - Answer HIV/AIDS Influenza Tobacco Mosaic Virus (TMV) Diseases caused by fungi - Answer Black Sigatoka Ringworm Athlete's foot Diseases caused by protoctists - An...
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Pathogen - Answer An organism that causes disease Examples of pathogens - Answer Bacteria Protoctists Fungi Viruses Communicable Diseases - Answer Diseases that can spread between organisms Diseases caused by bacteria - Answer Tuberculosis Bacterial meningitis Ring Rot Diseases caused by viruses - Answer HIV/AIDS Influenza Tobacco Mosaic Virus (TMV) Diseases caused by fungi - Answer Black Sigatoka Ringworm Athlete's foot Diseases caused by protoctists - An...
OCR A Level Biology Biological Membranes Midterm Exam With Solved Solutions 2024.
(a) What is a membrane? - Answer Structure that separates the contents of cells from their environment (a) What is compartmentalisation? - Answer The formation of separate membrane-bound areas in a cell (a) Why do certain organelles need to be compartmentalised? - Answer Metabolism includes many different and often incompatible reactions and environments - chemical gradients (a) Give another name for the cell surface membrane - Answer Plasma membrane (a) What are membranes fo...
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(a) What is a membrane? - Answer Structure that separates the contents of cells from their environment (a) What is compartmentalisation? - Answer The formation of separate membrane-bound areas in a cell (a) Why do certain organelles need to be compartmentalised? - Answer Metabolism includes many different and often incompatible reactions and environments - chemical gradients (a) Give another name for the cell surface membrane - Answer Plasma membrane (a) What are membranes fo...
OCR A Level Biology A Module 5 Test Questions With Correct Answers 2024.
5.1.1 COMMUNICATION AND HOMEOSTASIS - Answer 5.1.1 COMMUNICATION AND HOMEOSTASIS why do multicellular organisms need communication systems? e.g hormonal, nervous - Answer So they can respond to changes in the internal and external environment + coordinate the activities of different organs. responses can be behavioural or physiological How does responding to the environment help organisms survive? - Answer - increase chance of survival by responding to changes in external envir...
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5.1.1 COMMUNICATION AND HOMEOSTASIS - Answer 5.1.1 COMMUNICATION AND HOMEOSTASIS why do multicellular organisms need communication systems? e.g hormonal, nervous - Answer So they can respond to changes in the internal and external environment + coordinate the activities of different organs. responses can be behavioural or physiological How does responding to the environment help organisms survive? - Answer - increase chance of survival by responding to changes in external envir...
OCR A Level Biology Chapter 19 Final Exam With Verified Solutions 2024.
Mutation - Answer A change in the genetic material which may affect the phenotype of the organism Substitution - Answer A mutation where one or more nucleotides are substituted for another in a DNA strand Deletion - Answer A mutations where one or more nucleotides are deleted and lost from the DNA strand Insertion - Answer A mutation where one or more extra nucleotides are inserted into a DNA strand Mutagens - Answer Chemical or physical agent which causes mutation Trans...
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Mutation - Answer A change in the genetic material which may affect the phenotype of the organism Substitution - Answer A mutation where one or more nucleotides are substituted for another in a DNA strand Deletion - Answer A mutations where one or more nucleotides are deleted and lost from the DNA strand Insertion - Answer A mutation where one or more extra nucleotides are inserted into a DNA strand Mutagens - Answer Chemical or physical agent which causes mutation Trans...
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PA Motor Vehicle Damage Appraiser's License Practice Exam With Complete Solutions 2024.
NAMs Menopause Certification Exam And Answers 100% Passed.
AAMI Comprehensive Review Exam (Arts) Practice Questions Exam With Correct Solutions 2024.
AAMI Comprehensive Review – Science Exam With Verified Correct Solutions 2024.