When a metal element reacts with a non-metal element an ionic compound is formed. They have a giant lattice structure with strong ionic bonds. A lot of energy is needed to overcome these bonds.
What happens when a calcium atom forms an ion with a 2+ charge?
The atom gains two protons
The atom loses two electrons
The atom gains two electrons
What kind of ions are usually formed by metals?
Positive or negative ions
Which of the following atomic structures represents a positive ion?
9 protons,10 neutrons, 10 electrons
12 protons, 14 neutrons, 12 electrons
12 protons, 12 neutrons, 10 electrons
What happens when sodium and chlorine atoms form sodium chloride?
An electron transfers from each sodium atom to each chlorine atom
An electron transfers from each chlorine atom to each sodium atom
Sodium and chlorine atoms share electrons
What is the electronic configuration of the fluoride ion (charge = 1-) made from a fluorine atom with an atomic number of 9 and a mass number of 19?
Why do ionic compounds usually have high melting points?
The ions are arranged in a very regular pattern
The electrostatic forces between the ions are very strong
The ions are very heavy
When does magnesium chloride conduct electricity?
Only when solid
When solid and when dissolved in water
Only when molten or dissolved in water
What kind of structure is formed in solid potassium chloride?
Giant ionic lattice
Groups of two ions in pairs
What will be the formula of an ionic compound formed from calcium and oxygen?
Which of the following compounds contains three elements?