Isabel Matos (M.A.)

(Master en en Inglés como lengua extranjera.) - COLABORADORA. Redactora y divulgadora.

Computer's science

What is a JAVA event?

For example, let's say we have a JButton (a button in Java with which the user can trigger an action). If a user clicks...

biology

RNA Definition and Examples

RNA stands for ribonucleic acid , a biopolymer that encodes, decodes, regulates, and expresses genes . The forms in which RNA manifests itself can...

English

What are “supporting arguments” in a speech or composition?

One of the most common types of text in the process of learning a foreign language are essays. Essays, being academic in nature, have...

Chemistry

What do the numbers on the periodic table mean?

This article presents the meaning of each of the numbers that accompany the elements of the periodic table . In addition, we will see...

Science

9 Important Laboratory Safety Rules

There are several rules of behavior that ensure that we stay safe from the dangers inherent in school or professional laboratories. Following these guidelines...

Animals and Nature

What is the madreporito?

Echinoderms such as sea urchins and starfish are animals that are characterized by having an endoskeleton and an ambulacral system. They also have bilateral...

Spanish

Ways to use the infinitive in Spanish

Among the possible verb conjugations in Spanish are the personal and non-personal forms. The infinitive is among the non-personal forms, a category in which...

English

Examples and uses of the passive voice in English

In English we can use the active voice or the passive voice depending on the message we want to convey. With the active voice...

Education

What are homogeneous groups in education?

It is common to group students with a similar level of education so that they can share their academic skills and areas of knowledge....

Science

The difference between physical and chemical properties

There are many characteristics of matter that we can measure, including physical and chemical properties. The essential difference between the two is that the...

Chemistry

What is the law of conservation of mass?

In chemistry, the science that studies the properties of matter and how it interacts with energy, we find the law of conservation of mass....

English

What is a main clause in English grammar?

There are several ways to interpret what a sentence is. Certain definitions suggest that a sentence begins with a capital letter and ends with...

French

How to Express Exclamations in French

The elements of language give us various ways to express strong emotions or surprise. In orality, exclamations always carry some characteristic mark in the...

biology

How to extract DNA from a banana

This is one of the most popularly known processes to extract plant genetic material and be able to observe it under a microscope. It...

Computing

Ubuntu: how to write symbols and characters in Spanish

If you are not familiar with the Ubuntu operating system and are a native Spanish speaker, you may run into difficulties. Despite this, your...

French

List of French verbs with the correct prepositions

When studying a foreign language there are many ways to acquire new vocabulary. Cards with the most used words can be used to learn...

History and culture

Meaning and origin of the name Alvarado

The Alvarado surname is of Spanish origin, and later spread throughout Castilla, Extremadura, Andalusia, the Canary Islands and America. ...

Chemistry

Determining the empirical and molecular formulas of a compound

The three most commonly used types of chemical formulas are empirical, molecular, and structural formulas. The structural ones serve to detail the way in...

Statistics

How to use the ZTEST function in Excel

Within inferential statistics it is necessary to perform what is known as hypothesis testing; For this, multiple data management programs are available such as...

Psychology

What is a schema in psychology? Definition and examples

A scheme is a graphic or symbolic representation of the most significant aspects of material or immaterial things . The schemes can be made...

Science

Calculation of the wavelength of light from the frequency

Light is an electromagnetic wave that can be perceived by the human eye. It is approximately in the middle of the electromagnetic spectrum. It...

Science

How to boil water at room temperature without heating it

Although we usually associate the boiling of water with the high temperatures of the stove (whether due to fire or electricity), the truth is...

Chemistry

Simple method to prepare a solution

One of the most common ways to approach the preparation of a solution is by providing the desired final concentration in moles per liter...

Statistics

How to Calculate Standard Deviation Using the Range Rule

In statistics, within the measures of dispersion we find the variance, the standard deviation and the interquartile range. Measures of dispersion are some of...

Spanish

How to express enthusiasm and joy with words

It is very easy to realize the joy that another person is experiencing, because their face will exhibit characteristic gestures of happiness: a smile,...

History and culture

Wives, spouses and children of the god Apollo

In Greek and Roman mythology, Apollo is one of the most important gods on Olympus. Apollo has many faces in the myths of him...

Physical

How to demagnetize a magnet

Due to frequent use, or perhaps an accident, it is possible for a magnet to lose some of its magnetic force or stop working...

Science

How to make a smoke bomb

Whether it's done in the lab or in the comfort of your own home, making a smoke bomb is a project that can be...

History and culture

American Presidents Without College Degrees

It may surprise some, but in the United States you don't have to have a higher education to be eligible for head of state....

Spanish

Different types of clauses and how to use them

A thorough way to study a language and how it works is by dividing it into smaller units or parts. Thus, instead of studying...

Humanities

Inverted pyramid structure: the reasons for its success

It has been more than a century since this method of organization became commonplace in the American press. And its popularity is due to...

English

Learn idioms and phrases in context

It is difficult for a non-native speaker to understand the idioms of a new language. And it is that in any language certain idiomatic...

Spanish

Conjugation, use and examples of the verb «to live» in Spanish

In Spanish, the verb to live literally refers to the act of being alive and, figuratively, to the act of enjoying life. It is...

English

Examples of Relative or Adjective Clauses in English Grammar

In English, sentences are divided into smaller groups that work more or less cohesively. We find, for example, relative clauses, also called adjectives, which...

French

How do you pronounce the French words ‘au’ and ‘eau’?

Learning to pronounce a language correctly is a goal that many foreign language students want to achieve in a short time. The phonetics of...

Science

What “Chance of Rain” Really Means

Weather forecasts have been made for thousands of years, although the methods used to gauge the chances of rain, sun, wind or fog have...

Chemistry

Methods to extract caffeine from tea

Caffeine is an alkaloid present in many foods. Its properties are well known: for example, it stimulates the central nervous system of the human...

Chemistry

What is litmus paper? How to do the litmus test

The litmus test is a tool to measure the degree of acidity or alkalinity of solutions, that is, their concentration of hydrogen ions. To...

Chemistry

Flame temperature for different fuels

We might think that the conditions to ignite a flame are always the same, regardless of the materials, but the truth is that depending...

Literature

Ways to turn anything into “found poetry”

Poets are capable of finding poems even under stones. Even in cooking recipes, they can get everything they need to prepare a “found poem”....

Science

Undercooked beans can cause food poisoning

Beans or beans, called in Spain judías or alubias, are one of the most common foods in the traditional cuisine of many countries. Sometimes...

For students and parents

College Admission Interview Questions You Must Master

There are thousands of candidates each year waiting for an opportunity to obtain higher education, so it is logical that universities have well-defined selection...

For students and parents

Common Academic Title Abbreviations

Upon completion of undergraduate, graduate, postgraduate or diploma studies, students obtain a new academic title that accredits them in a certain area of knowledge....

Math

Differences between the null and alternative hypotheses

When carrying out an investigation or experiment, the researcher follows a certain methodology to ensure that his results are acceptable to the scientific community,...

English

What are ratified questions and how are they used?

All conversation is based on an exchange of information, which can be done directly or indirectly. Questions are asked directly and answers are received...

Philosophy

Logical Fallacies: Examples of Hasty Generalizations

Within logic studies, fallacies are arguments that seem valid but that due to different errors in their behavior turn out to be deceptions. These...

Physical

Density Calculation Worked Examples

The density of a body is defined as the ratio between its mass and the volume it occupies. We must also consider the definition...

History and culture

Table of nicknames and names to help you look up ancestors

When starting a search about our ancestors, it could happen that we do not know exactly the first names of those relatives that are...

English

Practice English using this dialogue with a famous actor

One of the best ways to practice English is by using dialogues. Conversations give us the opportunity to practice real vocabulary and speech expressions...

Linguistics