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Reactants and products in reversible and irreversible chemical reactions.
Watch the next lesson: https://www.khanacademy.org/science/biology/water-acids-and-bases/hydrogen-bonding-in-water/v/hydrogen-bonding-in-water?utm_source=YT&utm_medium=Desc&utm_campaign=biology
Missed the previous lesson? https://www.khanacademy.org/science/biology/chemistry--of-life/chemical-bonds-and-reactions/v/intermolecular-forces-and-molecular-bonds?utm_source=YT&utm_medium=Desc&utm_campaign=biology
Biology on Khan Academy: Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important. Covers topics seen in a high school or first-year college biology course.
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In this video I reveal the latest rumors about Apple’s secret “Project ARMOR” humanoid robot, how it might compare to existing home robots like NEO, Figure 02, and 4NE-1, and what it means for the future of AI companions. You’ll discover the tech behind Apple’s “fake house” lab, how they’re tackling software and hardware challenges, and why some people believe emotional bonds with robots are inevitable. I also share a glimpse of the ethical concerns raised by increasingly human-like machines.
Continúa el amor entre Sergio y Andrea.
Esta vez se van de vacaciones.
Aprenderemos un montón de vocabulario relacionado con las vacaciones y los viajes.
Objetos típicos que se guardan en la maleta, medios de transporte, documentación para los viajes y vocabulario relacionado con el aeropuerto.
Vocabulario sobre los viajes en avión. Diálogos para viajar en avión.
Diálogos típicos entre parejas, diálogos típicos de vacaciones y diálogos con el personal del aeropuerto.
Recuerda que si quieres aprender español con nuestro canal te recomendamos suscribirte y encender las notificaciones. Un nuevo video cada domingo. 🔔
Clase 75
📚 Aprende a hablar sobre tu rutina en el pasado en español
En este video, descubrirás cómo describir tu día en pasado con ejemplos claros y sencillos. Acompaña a Ben y su amiga mientras comparten las actividades que hicieron ayer y planifican su día de mañana. ¡Un contenido perfecto para practicar vocabulario, tiempos verbales y expresiones clave en español!
📝 Lo que aprenderás en este video
1️⃣ Vocabulario importante
Verbos comunes en pasado: fui, hice, desayuné, limpié, salí, horneé.
Expresiones útiles: "mi habitación estaba hecha un desastre", "el tiempo era perfecto", "compartí con mis vecinos".
Tiempos futuros: "mañana voy a jugar", "quizás hornee otro pastel".
2️⃣ Tiempos verbales destacados
Pretérito indefinido: para hablar de acciones concretas y terminadas en el pasado, como “hice yoga” o “vi una película”.
Futuro próximo: para planificar actividades futuras, como “voy a nadar” o “quiero leer un libro”.
3️⃣ Expresiones clave para la rutina diaria
Hablar de la mañana: “Por la mañana hice yoga en el parque”.
Actividades de la tarde: “Salí a pasear con mi perro”.
Planes nocturnos: “Hice una barbacoa con amigos”.
4️⃣ Ejemplo de una conversación natural en español
Sigue la conversación entre Ben y su amiga para aprender cómo expresar tus ideas de manera fluida. Escucha y repite para mejorar tu pronunciación y confianza al hablar.
👀 Estructura del video
Introducción: Ben y su amiga comienzan compartiendo sus días.
Mañana: Actividades como yoga, correr y desayunar.
Tarde: Paseos con el perro, limpieza y horneado de un pastel.
Noche: Momentos de relajación como una barbacoa y películas.
Cierre: Planificación del día siguiente.
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¿Qué hiciste ayer? Déjanos tus respuestas en los comentarios y practica tu español con nosotros. ¡Nos encanta leerte! 📝
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¡Bienvenidos a nuestra clase de español! Hoy exploraremos palabras de acción en español a través de ejemplos prácticos para principiantes. En este video, observamos cómo estas palabras se aplican en situaciones cotidianas a través de diálogos entre personajes. Presten atención a las frases importantes y los tiempos verbales utilizados.
Compartir:
Frase clave: "¿Quieres compartir?"
Tiempo verbal: Presente de indicativo.
Ejemplo: "Me encantan las manzanas, ¿quieres compartir?"
Limpiar:
Frase clave: "¿Me echas una mano?"
Tiempo verbal: Presente de indicativo.
Ejemplo: "Hoy toca limpiar la casa. ¿Me echas una mano?"
Levantar:
Frase clave: "Levantar cosas pesadas."
Tiempo verbal: Infinitivo.
Ejemplo: "Levantar cosas pesadas requiere de al menos 2 personas."
Nadar:
Frase clave: "¿Vamos a nadar al lago esta tarde?"
Tiempo verbal: Presente de indicativo.
Ejemplo: "¿Vamos a nadar al lago esta tarde?"
Pescar:
Frase clave: "Si pescamos algo lo podemos comer esta noche."
Tiempo verbal: Presente de indicativo.
Ejemplo: "Si pescamos algo lo podemos comer esta noche."
Bailar:
Frase clave: "¿Bailarás conmigo en la fiesta?"
Tiempo verbal: Futuro simple.
Ejemplo: "¿Bailarás conmigo en la fiesta?"
Correr:
Frase clave: "¿Vienes a correr por el parque?"
Tiempo verbal: Presente de indicativo.
Ejemplo: "¿Vienes a correr por el parque?"
Cocinar:
Frase clave: "¿Podrías preparar tú la cena esta noche?"
Tiempo verbal: Condicional.
Ejemplo: "¿Podrías preparar tú la cena esta noche?"
Viajar:
Frase clave: "¿Qué te parece si este verano viajamos a Brasil?"
Tiempo verbal: Presente de indicativo y futuro simple.
Ejemplo: "¿Qué te parece si este verano viajamos a Brasil?"
Estudiar:
Frase clave: "Estudiar juntos nos ha traído suerte en el pasado."
Tiempo verbal: Presente de indicativo.
Ejemplo: "Estudiar juntos nos ha traído suerte en el pasado."
En esta clase, hemos practicado la comprensión del español a través de diálogos y ejemplos prácticos. Recuerden prestar atención a los tiempos verbales y cómo se aplican en diferentes situaciones cotidianas.
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¡Feliz febrero! ¡Es viernes y tengo otro chiste para ustedes!
Happy February! It's Friday and I have another joke for you all!
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4th Grade Vocabulary Test on Part 3 word list is our third TEST video in the 4th Grade playlist.
Each of these vocabulary lessons has a corresponding test that your students can take.
Additional videos in this series will follow, so be sure to subscribe to our channel and tell a friend. If you have comments or suggestions on future videos please visit our channel linked below.
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It’s summer! Let’s go to the beach! It’s time for some fun under the sun!
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Come on let’s go
Today is hot, so,
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The sand and sea’s the place to be
Let’s build, build, build a castle
Build, build, build a castle
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Letra
Un caracol no hace ruido cuando pasa.
A un caracol le gusta el rock&roll,
y en una hojita se duerme si se cansa
en el verano cuando tiene calor.
Con su rollito cargado siempre a cuestas
muy despacito camina el caracol,
mientras la panza dibuja un caminito
de ida y vuelta que brilla con el sol.
Un caracol-col-col, un caracol-col-col,
Se pasea por el sol.
Un caracol-col-col, un caracol-col-col,
Se pasea por el sol.
A la mañana se asoma a su ventana,
De hojitas verdes y flores de color,
Al mediodia estira sus cuernitos,
Se despereza, y sigue el caracol.
A media tarde vosteza del cansancio,
Pues muy despacio la granja recorrió,
Y ya de noche saluda a los bichitos,
Les da un besito y se pone un camizon.
Un caracol-col-col, un caracol-col-col,
Se pasea por el sol.
Un caracol-col-col, un caracol-col-col,
Se pasea por el sol. (x2)
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Un Caracol - Bichikids 2 | El Reino Infantil
Título original: Un Caracol
Autor/Compositor: Liliana Carmen Vinelli
Intérprete: Duo tiempo de Sol
In this video we will learn fraction based simplification . Here we will learn how to take lcm as well as convert mixed fraction into fraction also we learn addition of fraction.
Simplification Tricks | Fraction Based Simplification | Simplify Mixed Fraction | Simplifying
#simplify #simplifying #simplification
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https://youtu.be/iYdJJOHdZf4
Simple Interest Formula ( साधारण ब्याज )
https://youtu.be/-0GA7jTrpTo
Simplification ( सरलीकरण )
https://youtu.be/YNhbsNZ2PKc
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https://youtu.be/pltDkukLyNs
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{Characteristic Polynomial 3x3 & 2x2} - https://youtu.be/QfF_whXs_CA
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Partial Fractions in 5 minutes | Shortcut Method - Best Short Trick By @Dr.Gajendra Purohit - GP Sir
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Time Stamp
0:00 - An introduction
0:26 - Q1. Based on partial fraction
2:04 - Q2. Based on partial fraction
5:26 - Q1. answer asked in Comment box based on partial fraction
5:39 - Detailed about old videos
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Educational video for children to learn kitchen utensils vocabulary. The little ones will discover what these objects are and how we use them in the kitchen: fry-pan, pot, pressure cooker, blender, microwave, coffee maker, rolling pin, toaster and stove. At the end of the video, they will recap everything they learned. Excellent resource for preschool education.
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In this multiplication video, we'll be learning about multiplication tables! We'll start with table 1 to 10.
This multiplication video is perfect for kids! We'll be using simple, clear language to make it easy for you to understand. Plus, we'll be adding funny animations to make the process more fun! So why wait? Start learning multiplication tables today with @AAtoonsKids!
Multiplication Table | multiplication table 1 to 10 | Table 1 to 10 | @AAtoonsKids @AAtoonsStudy
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Chapters
00:00 Introduction
00:10 Multiplication Table of 1
00:44 Multiplication Table of 2
01:18 Multiplication Table of 3
01:53 Multiplication Table of 4
02:28 Multiplication Table of 5
03:03 Multiplication Table of 6
03:37 Multiplication Table of 7
04:12 Multiplication Table of 8
04:47 Multiplication Table of 9
05:21 Multiplication Table of 10
_______________________________________________________________
Other related educational videos
Maths for kids playlist - https://youtube.com/playlist?l....ist=PL_tK2rVO7aq7C7U
Multiplication of two digits - https://youtu.be/rKUE8zqV1rk
Subtraction for kids - https://youtu.be/ZygCUtAUWJA
Calculation of 100 - https://youtu.be/DCHZwH25rzk
Even and Odd numbers - https://youtu.be/DrFMZfnaoN4
Addition for kids - https://youtu.be/rAgjlT_sQro
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In this video you will find a compilation of videos that are focused on learning the vowels and numbers 1-10. By watching this video you will encounter how to write, pronounce and use each vowel in a sentence. Each vowel explanation is followed by a catchy song. Also, you will discover fun ways to learn how to count, such as with Suki the cookie. Come with us on this fun learning adventure! This video belongs to a collection of videos that teaches kids the basic foundations of knowledge. These videos always engage children with catchy songs and creative characters.
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People claim that 70-80% of household dust is dead skin, but is it true?
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Special thanks to J.M.E.H van Bronswijk, author of 'House Dust Biology'. We exchanged emails to make sure I got my facts straight for this video. Below is an excerpt from her email to me, responding to my claims that start with a dash:
- Around half of airborne dust particles under 100um are skin scales
This is true for climates, regions and seasons where people live mostly indoors.
The 1 to 2 g of skin scales shed each 24 hours will end up in places where people are present (and rub their skin or have textile moving over the skin).
You can also look at it from a different angle: What else has the same size and could contribute? That will usually be pollen from outdoor sources, also depending on season, region and climate, as well as the ventilation regime of the building.
However, taken as the median value over a whole year, I consider your statement correct for regions with a temperate climate.
- 53% of dust particles vacuumed from a mattress were found to be skin scales
It depends a little on the type of mattress. For polyether mattresses the amount may even be larger.
For mattresses made of natural material it could be less since the mattress-material will also give off small particles.
- larger particles consist mostly of fibers, eg. cotton, paper, wool, synthetics
That's true .. including bread crumbs ..... 🙂
- skin scales seem to form a larger fraction of dust where we spend more time, e.g. in or near bed.
..... and on the couch used to view television or be active in gaming.
It has to do with the constant production of skin scales over the 24 hours.
- skin scales form a smaller fraction of dust if there are significant other sources, e.g. carpeting, dirt from outside etc.
Yes, everyting you walk on with your shoes or that recieves dirt from the outside with other means, will have a lessr percentage of human skin scales.
However, do not forget the skin scales of pets that will also be an active allergen for many people, and a food source for house dust mites.
Information on dust particle size ©ISO. This material is adapted from ISO 7708:1995, with permission of the American National Standards Institute (ANSI) on behalf of the International Organization for Standardization. All rights reserved.
Research and Writing by AJ Fillo and Derek Muller
Editing, Audio Mix & Master, and Computer animations by Jonny Hyman
Dust and character animation by Ivy Tello
Filming by Raquel Nuno
Thumbnail by Fictionalhead https://www.youtube.com/fictionalhead
Intro Music composed by Jonny Hyman
Additional Music from Epidemic Sound: Colored Spirals, Observations
In Queenstown, New Zealand, I jumped off the Kawarau Bridge - the site of the first bungy jump. It was a thrilling experience, preceded by a terrifying, gut-wrenching half hour wait. All in all an awesome adventure, even if the woman fitting my harness didn't know the first thing about the acceleration of free-falling bodies.
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Learn to Play Chess | Double Check | Kids Academy
Double check is a check by two pieces all at the same time. When it comes to playing chess, the double check is always considered equally as a single check.
The only difference lies in the symbolic representation of both the terms. A single check is represented by “+” and a double check is represented by “++”. However, the sign “++” is sometimes used to indicate checkmate too.
In double check, one piece moves to deliver a check and reveal an already discovered check that it was blocking before. Discovery is the best way to destroy your opponent.
You can learn more about the double check move on the internet. All you have to do is to type “learn chess for kids” online and you will have several results pop up on your screen.
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