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What Does It Matter?
Math and Equations
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The Name Is Bond
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100

Can be a solid, liquid, or gas

What is Matter

100

25 degrees C, is equal to __________K?

298 K

100

Mg + HCl        H2 + MgCl2

This is an example of a? 

A. Double Replacement

B. Single Replacement

C. Decomposition

A. Double Replacement

100

Electrons are transferred in: 

A. covalent bonds  C. non-covalent bonds

B. ionic bonds        D. James Bond



B. Ionic Bonds

100

Reaction energy profile: 

A. traces the progress of the reaction on the x-axis

B. plots the relative energies of both the reactants and products. 

C. plots energy on the y-axis

D.  All of the above

D. All of the above

200

True or False? 

Temperature can be classified as matter, but air, fog, and oxygen molecules cannot.  In addition, solids have particles moving at the highest average velocity?

False, 

Temperature CANNOT be classified as matter.  Air, fog, and oxygen molecules CAN.

Gas has particles moving at the HIGHEST average velocity.

200

A sample of 2.78g of iron and 1.19 g of oxygen has an empirical formula of?

FeO

FeO2

Fe2O3

Fe2O3

200

NaClO3           NaCl + O2

This is an example of 

A. double replacement

B. combination

C. single replacement

D. decomposition


D.  decomposition


200

True or false, 

In a covalent bond, electrons are equally shared

True

200
The following is True or False? 


A neutron has a 0 charge, a proton has a -1 charge, and a electron has a a +1 charge


False: 

Neutron 0

proton +1

electron -1

300

A piece of wood and soil/dirt are considered 

A. heterogenous mixture

B. pure substance

c. homogenous mixture

A.  heterogenous mixture

300

How many significant figures are there in 53.9009?

6

300

Calculate the equilibrium constant Keq (Keq=Products/Reactants)

2NO(g) + O2(g)     2NO2(g)

Calculate the equilibrium constant if the concentrations of the reactants and prducts are 1.26 x 10-10 M for NO, 2.28 x 10-3 M for O2 and 9.32 x 10-6 for NO2.

Product is 2 NO2(G)

Reactant is 2NO(g) * O2(g)

9.32 * 9.32= 86.86

1.26 * 1.26 * 2.28=3.62

86.86/3.62=23.99 

23.99/10= 2.399  or 2.4 x 10-12



300

A stable arrangement of atoms made by sharing 2 electrons between adjacent atoms.

Covalent bond between 2 atoms

300
The flow of electrons is known as _____________

Electricity

400

An iron nail is a _________ and beeswax and candle wax melted and stirred together is ___________

A. heterogenous mixture, pure substance

B. pure substance, homogenous mixture

C. hetergenous mixture, homogenous mixture

B.  pure substance, hemogenous mixture

400

The Calculation for Density is Density= M/V

True or False? 

What is the density of a piece of wood that weighs 95g and displaces 0.641 L of water? Report your answer in g/mL.  (Hint... you must convert your units)

True

0.15 g/mL

400
A gas under an initial pressure of 0.75 atm is compressed at a constant temperature from 35L to 4.8L.  What is the final pressure? 





PiVi          PfVF

____  =   ____

ni Ti        ni Ti


(0.75)(35)= Pf(4.8)

26.25=pf(4.8)

26.25/4.8= 5.5 atm

Pf= 5.5 atm
400

When drawing a 3 dimensional structure diagram of a molecule the dotted line_________

A. indicates that he bond is in the plane of the page

B. shows a bond that projects out from the page

C. shows a bond that goes back behind the page


C.  shows a bond that goes back behind the page

400

True or False, 

Both bond formation and bond breaking release energy?

False, only bond formation releases energy

500

Conversion from a liquid state to a gaseous state is ______ and conversion from a solid to a gas is ______

A. melting

B. submilnation

C. condensation

D. vaporization

D. vaporization

B. sublimination

500

In PV=nRT

the constant R is equal to ____l atm/k mole

and 1 atm is equal to ______ cm Hg

0.0821

760


500

Which equation has a 1:1:1:1?

Zn + HCl   H2 + Zncl2

NaOH + HCl  Nacl+ H2O

Which equation has a 1:2:1:2?

Zn + HCl   H2 + Zncl2

Fe2O3 + Al  Al203 + Fe

NaOH + HCl  Nacl+ H2O

Fe2O3 + Al  Al203 + Fe

500

Which of the following molecules are needed to form hydrogen bonds? 

A. O-H bond

B. H-F bond

C. N-H bond 

D. at least one of the above mentioned bonds

D

500

This is the difference in energy between the reactants and products in a chemical reaction. 


The heat of reaction