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Spaced Repetition
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Turn any document into study-ready flashcards. Upload PDFs, photos, or handwritten notes and let AI do the rest.

Image Occlusion
Create visual study cards by masking parts of diagrams, maps, and illustrations. Perfect for anatomy, geography, and more.

Everything you need to study effectively
Smart Review Scheduling
The SM-2 spaced repetition algorithm tracks your performance and schedules each card at the optimal interval, so you spend less time studying and remember more.

AI Card Generation
Upload any document, photo, or handwritten note and let AI extract key concepts and create flashcards automatically.

LaTeX Support
Render complex math and science formulas beautifully on your flashcards with full LaTeX support.

What you can do with Etch
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What is a nucleophilic substitution reaction?
A reaction where a nucleophile replaces a leaving group on a substrate.
Who proposed the hierarchy of needs?
Abraham Maslow, in his 1943 paper 'A Theory of Human Motivation.'
What is a linear combination of matrices?
An expression of the form α₁A₁ + ... + αₙAₙ, where α are scalars.
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, and Telophase.
What is the mechanism of action of aspirin?
Irreversible inhibition of COX-1 and COX-2 enzymes.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.
What are the four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle.
What does 'sin embargo' mean?
However / Nevertheless.
What is Einstein's mass-energy equivalence?
E = mc², energy equals mass times the speed of light squared.
What does the 14th Amendment guarantee?
Equal protection under the law and due process.
What is a p-value?
The probability of observing results as extreme as the data, given the null hypothesis is true.





