SEMESTER EXAM OH NO Flashcard

Physical seperation based on the different boiling points of the substances in the mixture.

What seperation method is this?

Distillation

(picture water being boiled and dripping down into a beaker)

Method of physical seperation based on different sized partices of the substance in a mixture
Filtration
How do you properly smell a chemical in a lab?
Wafting
What is the proper lab technique for diluting an acid?
Pour water in the acid while stirring
A ________ is formed by losing electrons.
A cation
A _______ is formed by gaining electrons
An anion.
Which has a neutral charge and is found in the nucleus?
a Neutron
Which is negative and is found in the electron cloud?
an electron
which is positive and is also found in the nucleus?
protons
What is Hunds Rule?
that each blank in the electron orbital thing must be filled up before you can go back and add more to it

A+B->AB

or

2H2+O2-> 2H2O

What reaction is this?

Synthesis reaction

Synthesis= putting together, combining.

AB->A+B

or

2NaCl->2Na+Cl

Which reaction is this?

Decomposition

Decomposition= de-compose=to break down.

Is this endo or exo thermic?

A+B->C+D+Energy

Exothermic

Does this describe endo or exo thermic?

* –/ H (Negative Delta H)

* Realeases energy

* Heat goes on the right

* Decomposition, Gas -> Solid

* Heat of Vaporization, Gas -> Liquid, Condensation

* Heat of fusion, Liquid -> Solid, Freezing


These are all exothermic

Does this describe endo or exo thermic?

* + / H (positive Delta H)

* Absorbs Energy

* kJ+R->P (kJ=kilo joules)

* Heat on the left

* Heat of fusion, Solid -> Liquid, melting

* Sublimation, Solid -> Gas

* Heat of vaporization, Liquid -> Gas, Boiling


These are all ENDOTHERMIC

Which one is this?

1 mol

 molar

mass

Grams to Moles 

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