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States of Matter 107
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Solutions 61
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Nomenclature 15
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Hydrocarbons 13
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Alcohols 3
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Amines 2
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Polymers 5
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Biomolecules 13
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Proteins 26
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Enzymes 4
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Lipids 14
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Metabolism 39
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Vitamins 4
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Hormones 1
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Alloys 1
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Nucleus 1
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Cell Cycle 18
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Ecosystem 35
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Biomes 24
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Food Chains 15
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Biodiversity 23
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Habitat 4
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Skeletal System 116
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Nervous System 110
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Porifera 6
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Cnidaria 6
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Nematoda 6
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Annelida 7
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Arthropoda 12
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Mollusca 4
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Chordata 5
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Fish 76
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Amphibians 10
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Reptiles 14
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Birds 2
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Mammals 106
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Anatomy 17
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Physiology 19
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Reproduction 23
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Behavior 63
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Bacteriology 32
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Virology 32
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Mycology 16
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Parasitology 51
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GMOs 4
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Bio Enzymes 21
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Bio Hormones 32
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B Cells 1
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Clouds 1
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Marine Life 47
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Wetlands 5
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Tsunamis 1
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Quizzes, Questions & Answers
Recent Quizzes
This AP Chemistry quiz focuses on chemical formulas, equations, and mole concepts. It assesses understanding of compound formation, molar mass calculations, and empirical formulas, enhancing skills crucial for academic success in...
Questions: 10 | Attempts: 301 | Last updated: Mar 19, 2023
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Sample QuestionWhat is the correct formula for the compound formed when magnesium reacts with nitrogen?
This exam tests you about your knowledge on chemical equations. Some math equations will be involved too.
Please don't use the internet to cheat - it ruins the atmosphere.
Good luck!
Questions: 10 | Attempts: 2409 | Last updated: Mar 22, 2023
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Sample QuestionJim added a base to an acid. What did he get as a result?
Chemical Calculations Notes 1 answers to examples.
Note:
1. If your answer for number of atoms is (for example) 3.00 x 1023, your answer has to be entered as 3.00 x 10^23
ie. 3.00(space)x(space)10^23
^ represents...
Questions: 10 | Attempts: 247 | Last updated: Mar 20, 2023
A reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. Are you preparing for exams on the subject? This quiz will help you do that.
Questions: 7 | Attempts: 1896 | Last updated: Mar 21, 2023
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Sample Question2NH3(g) <------> N2(g) + 3H2(g) ; Heat of reaction = +92 kJThe amount of ammonia in the equilibrium mixture can be made larger by
This quiz covers key concepts from Chemistry chapters 11 and 12, focusing on chemical equations, reaction stoichiometry, and catalysts.
Questions: 7 | Attempts: 122 | Last updated: Nov 24, 2023
What do you know about chemical reactions? A chemical reaction is a route that leads to the transformation of one group of chemical substances to another. Chemical reactions exemplify changes that only involve electrons'...
Questions: 12 | Attempts: 13406 | Last updated: Mar 22, 2023
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Sample QuestionWhich one of the following represents a physical change?
This quiz covers key concepts in chemistry including reactivity in the periodic table, types of chemical bonds, and properties of chemical equations.
Questions: 50 | Attempts: 208 | Last updated: Mar 21, 2023
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Sample QuestionWhich "group" on the periodic table is the most reactive?
Identify the types of chemical reactions shown in each example.
Questions: 5 | Attempts: 687 | Last updated: Mar 22, 2022
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Sample QuestionCalcium plus oxygen yields calcium oxide
A simple way to learn: practicing! By applying the Law of conservation of mass it is easy to have any chemical equation balanced! A few rules and everything is possible!
Questions: 9 | Attempts: 1783 | Last updated: Mar 21, 2023
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Sample QuestionWhat happens in a chemical reaction?
VA SOLs: PS4c PS.5a, c, PS6a, b, c
Questions: 19 | Attempts: 642 | Last updated: Mar 22, 2023
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Sample QuestionWhat is a reaction in which one element replaces another in a compound, or in which two elements in a different compounds trade places?
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