Why learning with Classgap?

Satisfaction guaranteed

If you're not completely satisfied after your first class, we'll refund your purchase. more info

If you didn't do the lesson, it's cancelled or you are not completely satisfied within 24 hours passed your first lesson, we'll help you find a new tutor or refund your purchase.

Change the date at any moment

You will be able to reschedule the class if you can't assist.

Pay once you've received the lesson

We will make the payment of the lesson when finished more info

You will need to enter your payment details. In the case of individual class bookings the amount will be charged at the time of the class, but in the case of packs the payment is made in advance.


He's from Spain



over 10 years of experience teaching online classes

  • Chemistry
    Basic Chemistry Middle sc., High sc. / Sixth form, University
    Inorganic Chemistry Middle sc., High sc. / Sixth form, University
    Organic Chemistry Middle sc., High sc. / Sixth form, University
  • Biology Middle sc., High sc. / Sixth form
  • Physics Middle sc., High sc. / Sixth form
  • Maths Middle sc., High sc. / Sixth form



EnglishConversational skills


Ph.D. en Ingeniería Química Y Tecnologías del Medio Ambiente
Degree Quimica


The tutor wrote the presentation in another language View the original text

Me llamo Sonia, soy Doctora en Ingeniería Química y llevo más de 10 años dando clases particulares de todas las asignaturas de Ciencias a nivel de bachillerato. A nivel de universidad he impartido clases de todas las asignaturas de quimica y farmacia. He dado clases individuales y a grupos con excelentes resultados

My name is Sonia, I am a PhD in Chemical Engineering and I have been teaching private classes of all the subjects at the baccalaureate level for more than 10 years. At the university level I have taught classes in all chemistry and pharmacy subjects. I have given individual classes and groups with excellent results

Book an online lesson (The calendar displayed shows your local time)

Sonia accepts booking with at least 48 hours in advance.

hours Monday


Fernandez Ludi
Buena profesora. Explica muy bien, muy clara y concisa.
24 reviews
Recomendable al 100%
10 reviews
muy buena profesora,explica claro y conciso
The description has also been written in other languages, click here to read them all

Frequently Asked Questions

• Can I cancel a booking?

Yes, you can cancel booking up to 8 hours before the lesson starts, indicating the reason for the cancellation. We will study each case personally to carry out the refund.

• How do I pay for the lesson?

At the time you select a lesson or package of hours, you will make the payment through our virtual payment service. You have two options:
- Debit / Credit
- Paypal
Once the payment is settled, we'll send you an e-mail with the booking confirmation.

• Can I modify a booking?

Yes, something unexpected can always happen, so you can change the time or day of the lesson. You can do it from your personal area in "Scheduled lessons" through the option "Change date".

• How does a lesson at Classgap happen?

The class is done through classgap’s virtual classroom. Classgap was developed specifically for educational purposes, including many useful features such as: digital whiteboard, online text editor, webcam, screen sharing and many more.