Chemistry Exam Questions Practice Test part 3

Chemistry is a branch of physical science that studies the composition, structure, properties, and behavior of matter, as well as the changes it undergoes during chemical reactions. It is concerned with the composition, properties, and behavior of atoms and molecules, as well as their interactions and transformations. Chemistry encompasses a wide range of topics, from the fundamental principles of atomic and molecular structure, to the properties of elements and compounds, to the study of complex chemical reactions and processes. It plays a critical role in a variety of fields, including materials science, environmental science, medicine, engineering, and many others. Chemists use a variety of tools and techniques to study chemical systems, including analytical techniques to identify and quantify chemical compounds, spectroscopy to study the interactions of light with matter, and computational methods to model and predict the behavior of chemical systems.

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Having trouble with percentage solutions?

Don’t know your w/v from your w/w?

If you are struggling with percentage solutions, then this course is for you!

In this course, you learn about the different types of percentage solutions you may find or be asked to make in a lab. The course will cover percentage weight by volume (w/v), percentage volume by volume (v/v) and percentage weight by weight (w/w) solutions, and how to calculate the amount of a substance you need. You will also get see how the different types of percentage solutions are made up in the lab.

This course is for you if you struggle with questions such as “How many grams of NaCl do you need to make 10 ml of a 5% (w/v) solution?” or “What is the percentage weight by weight of a solution consisting of 5 g of glycerol mixed with 60 g of water?”

The course comes with three quizzes to test your understanding of the three different types of percentage solutions, and by the end of the course you will be able to:

• Calculate the number of grams of a compound needed to make up a percentage weight by volume (w/v) solution

• Calculate the weight by volume (w/v) percentage for a solution

• Calculate the number of grams of a compound needed to make up a percentage weight by weight (w/w) solution

• Calculate the weight by weight (w/w) percentage for a solution

• Calculate the number of millilitres of a solution you will need to make up percentage volume by volume (v/v) solution

• Calculate the volume by volume (v/v) percentage for a solution

And you will have seen how to make the solutions up in the lab.

The course also comes with an eBook (epub/pdf) that outlines key information about percentage solutions and includes additional worked examples.

Who this course is for:

• The course is targeted at undergraduate and post-graduate biology, biomedical sciences, medical and chemistry students.

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Frequently Asked Questions

How long do I have access to the course materials?

You can view and review the lecture materials indefinitely, like an on-demand channel.

Can I take my courses with me wherever I go?

Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don’t have an internet connection, some instructors also let their students download course lectures. That’s up to the instructor though, so make sure you get on their good side!