Bonds
Compounds and Mixtures
Moles
Miscellaneous
100
What is an anion?
A non-metal atom which has gained one or more electrons and has a negative charge.
100
What is a compound?
A substance that is made up of atoms of different elements, joined together by chemical bonds.
100
What is molar mass?
The mass of one mole of a subatance.
100
What is an allotrope?
One of the different in which a particular element may exist in a given physical state.
200
What is covalent bonding?
A sharing of electrons between atoms.
200
What is distillation?
The technique of separating a liquid from a mixture by boiling the mixture until the liquid evaporates and is then collected by condensation.
200
What is the definition of the empirical formula?
The simplest whole-number ratio of the elements in a compound.
200
John Newlands came up with the law of _____.
Law of Octaves.
300
Does the compound CaO use a metalic bond, an ionic bond or a covalent bond?
Ionic bond.
300
Is this mixture homogeneous or heterogeneous?
Homogeneous
300
Calculate the number of moles in 150g of H2O.
8.32 mol
400
Determine the compound name for N2O
Nitrogen Oxide
400
Determine the best separation technique to separate Vegetable oil and water.
Simple distillation
400
Calculate the percentage of hydrogen in water.
11.20% H2O
400
What is Avogadro's number?
6.02 x 1023
500
Determine the ionic formula for Ammonium sulfite.
(NH4)2SO3
500
A mixture in which another substance is dispersed (but not dissolved) in another substance; will separate over time.
What type of mixture is this?
A suspension
500
If the empirical formula of a compound is CH2 and the molar mass is 28.054, find the molecular formula of the compound.
C2H2