Top answers


Explain why the boiling point increases from sodium to aluminium.

The elements from Na to Al have metallic bonding - the electrostatic attraction between positively charged metal ions and the delocalised electrons. Sodium forms Na+ ions, therefore 1 electron is lost from e...
DC
Answered by Doroti C. Chemistry tutor
21902 Views

What is cell differentiation?

We all begin life as a totipotent single cell: the zygote. Totipotency is when a cell can differentiate into any cell line of the human body. The zygote divides repeatedly and differentiates to produce many ...
CH
Answered by Candice H. Biology tutor
2165 Views

Explain one theory of the Behaviourist Approach.

The behaviourist approach looks at different types of conditioning. Classical Conditioning is put forward by Pavlov, looking at learning through association. He uses dogs to show how it works; a dog is given...
CS
3351 Views

why/ how should I write an artist statement?

Why?First and foremost an artist statement will help you to clarify your own ideas about your work of art and help others who are viewing your artwork to understand your ideas and methodology, these viewers ...
TF
Answered by Tia F. Art tutor
2039 Views

What type of radioactive decay reduces the mass number of a nucleus? Explain how it works.

Alpha radiation reduces the mass number of an atom by 4. When an atom's nucleus is unstably large, it emits an alpha particle which consists of two neutrons and two protons. This is called alpha decay. Since...
FB
Answered by Francis B. Physics tutor
2641 Views