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Explain why ionic substances have high melting points?

Ionic substances have high melting points because a lot of energy is required to break the strong, electrostatic forces of attraction between the oppositely charged ion in the ionic substance.
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Answered by Arunima B. • Chemistry tutor
3511 Views

What are the similarities and differences between atoms of the isotopes Cl-35 and Cl-37

The numbers 35 and 37 are the mass numbers for the two isotopes of chlorine. They both have the same atomic number(proton number) as they are the same element, hence they also have the same number of electro...
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Answered by Arunima B. • Chemistry tutor
30684 Views

Há muita violência no futebol?

Sim, na minha opinião, há muita violência no futebol especialmente em Portugal entre os clubes Benfica e Porto. Sempre que há jogo há imensas pessoas a bater-se umas às outras, o que me preocupa porque se eu...
IQ
Answered by Inês Q. • Portuguese tutor
1645 Views

Solve 5(x+3) < 60

Our technique here will be the same used to solve the problem 5(x+3) = 60, but we must take care at each step to decide whether our inequality changes direction.Firstly, we expand the brackets to give 5x + 1...
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Answered by Arron B. • Maths tutor
17193 Views

Describe how a sperm cell is adapted for it's function. (4 marks)

1 mark each for one of the following: Describe the sperm cell's function; i.e. fertilising the egg (Proportionally large) flagellum for mobility Possess an Acrosome filled with enzymes to pass through the eg...
JM
Answered by Jack M. • Biology tutor
3304 Views