C3: Structure And Bonding Flashcards
What are the three states of matter?
Solid, liquid and gas
What are the particles like in solids?
Fixed, vibrate and close together.
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What are the particles like in a liquid?
Close together, can slip and slide, random motion.
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What are the particles like in a gas?
Lots of space between them, random moment.
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What happens to energy in melting and boiling?
Energy is transferred from the surrounding to the substance
What happens to energy in freezing and condensing?
Energy is transferred from the substance to the surroundings
What is the sharing of electrons called?
Covalent bonding
What is the transferring of electrons called?
Ionic bonding
What ions do group 1, 2 and 3 form?
Group 1: +1
Group 2: +2
Group 3: +3
What ions do group 4 and 0 form?
They don’t form ions
What ions do group 5, 6 and 7 form?
Group 5: -3
Group 6: -2
Group 7: -1
Why do ionic compounds have a high melting point?
It takes a lot of energy to break the strong bonds
Why do ionic compounds conduct electricity when molten or dissolved?
Their ions become mobile and charge through the liquid
Why do simple molecules have low melting and boiling points?
They have weak intermolecular forces
Why do simple molecules not conduct electricity?
They have no overall charge
