Oquizy

What is a common physical property of giant covalent structures?

Conduct electricity High melting point Low melting point Soft texture

Xinyi dissolves sodium chloride in water and tests conductivity. It conducts electricity. Why?

The Na⁺ and Cl⁻ ions are free to move The salt contains delocalised electrons The sodium metal reacts with water Water contains free electrons

Brass is harder than pure copper. Which statement best explains why?

Brass contains only small atoms Brass has stronger bonds between atoms Brass is a compound The different-sized atoms in brass distort the layers

Xinyi draws a dot-and-cross diagram for NaCl. What is correct about electron movement?

Sodium and chlorine form a double bond Sodium gains one electron from chlorine Sodium gives one electron to chlorine Sodium shares electrons with chlorine

Which pair of elements is most likely to form an ionic compound that exists as a solid at room temperature (RTP)?

Aluminium and chlorine Carbon and oxygen Hydrogen and fluorine Sodium and hydrogen

Which option best shows the formation of a covalent bond between two oxygen atoms?

One oxygen giving two electrons to the other Two oxygen atoms giving one electron to each other Two oxygen atoms sharing one electron Two oxygen atoms sharing two pairs of electrons

Quiz: Chemistry - Chemical Bonding