Chemistry Review

Chemical Reactions

100

What is synthesis?

A single element.

200

What type of Rxn is:

AB+CD->AD+BC

SIngle Displacement

300

What type of reaction is 

_H₂O₂->_H₂O+_O₂

Synthesis

400

Balance _Al(NO₃)₃+_Mg->_MG(NO₃)₂+_Al

2Al(NO₃)₃+3Mg->3MG(NO₃)₂+2Al

500

Balance _FeO+_O₂->_Fe₂O₃

4FeO+_O₂->2Fe₂O₃

The Mole

100

What do coefficients tell you?

how many moles are in the equation. 

200

What is molar mass?

atomic #

300

Find the Molar Mass of NaCl

NaCl=58 g/mol

400

What is Aubqadro´s Number

1 mole=6.022 x 10²³

500

What is the Molar Mass of Mg₃(PO₄)₂

 Mg₃(PO₄)₂=262 g/mol

Stoichiometry

100

What is stoichiometry

greek root

200

What are empirical formulas?

reduced forms of a chemical compound

300

4.73 mol of Al how many Al₂O₃

Al-> Al₂O₃

2.365 mol Al₂O₃

400

WHat is percent yield equation?

Actual yield/theoretical yield  x100

500

What is endothermic

Absorbs heat

Nuclear Chem

100

What is the most dangerous form of radiation?

Gamma Particles 

200

 What the charge of Alpha particles 

 +2

300

What the least dangerous form of radiation

Alpha

400

This equation²⁰⁶₈₄Po→⁴₂He+²⁰²₈₂Pb is an example of...

Alpha Decay

500

This equation  ¹²⁴₅₁Sb→⁰_-1B+ ¹²⁴₅₂Pb is an example

Beta decay

Equilibrium

100

  The left side is called?

Reactants

200

What is half-life?

The time  required for a reactant concentration to decrease to one-half its initial value (t1/2)

300

The right side is called?

Products

400

Whats the formula for Equilibrium

aA+bB→cC+dD

500

Gold-198 has a half-life of 2.7 days. How much of a 96g sample will be left after 8.1 days?

8.1 /2.7= 3 half lifes