JHS Chemistry Final Review S1

Matter and Numbers

100

What are the four indicators of a chemical change?

Color Change, Change in Temperature, Forms a Gas, Forms a Precipitate.

200

How many sig figs do the following numbers have?

0.002

1.020

3.458

500

300.000

1

4

4

1

6

300

Convert the following to scientific notation

5700

14,000,000

0.000675

5.7 x 10³

1.4 x 10⁷

6.75 x 10^-4

400

Identify the following examples as: Element, Compound, Homogeneous Mixture, or Heterogeneous Mixture:

Sodium (Na)

Salt Water (Salt has completely dissolved)

Cookies and Cream Ice Cream

Hydrogen Peroxide (H₂O₂)

Element

Homogeneous Mixture

Heterogeneous Mixture

Compound

500

Identify the following as a Physical Change or Chemical Change:

~Cracking Ice

~Baking cookies

~ Dissolving salt in water

~ Boiling Water

~ Metal reacting with an acid

~Setting of fireworks

Physical

Chemical

Physical

Physical

Chemical 

Chemical

Compound, Composition, & Bonding

100

Identify the following items as Ionic, Covalent, or Metallic:

~ Hydrogen (H₂)

~Salt ( NaCl)

~ Hydrochloric Acid ( HCl)

~ Brass (Cu + Zn + Pb)

~ Magnesium oxide ( MgO)

Covalent

Ionic

Covalent

Metallic

Ionic

200

What is the difference between a cation and an anion

Cations = positive charged ion - original atom lost electrons

Anion = negative charged ion - original atom gained electron

300

What groups get roman numerals? (Give numbers)

What is the name of this section?

What are the exceptions within this section? (i.e. Who doesn't get roman numerals)

Which other two elements get roman numerals that are not part of this group?

Groups 3-12

Transition Metals

Zn , Ag

Pb,  Sn

400

Write formulas for the following:

Ammonium bisulfate

Copper (II) chloride

Dihydrogen monoxide

Beryllium iodide

Sulfur hexafluoride

NH₄HSO₄

CuCl₂

H₂O

Bel₂

SF₆

500

Name the following compounds:

CH₄

Pb(SO₄)₂

Al(NO₂)₃

B₅F₉

N₂O₅

Carbon Tetrahydride

Lead IV sulfate

Aluminum nitrite

Pentaboron nonafluoride

Dinitrogen pentoxide

Atomic Structure & Periodic Table

100

Identify the Symbol, Charge,and Location for:

Protons

Neutrons

Electrons

Protons= p⁺ / +1 / Nucleus

Neutrons = n^o / 0 / Nucleus

Electrons = e^- / -1 / Electron Cloud

200

Which subatomic particle is unique to all elements?

Protons

300

Answer the following questions for Calcium:

# Valence e^-

Common charge

Group #

Period #

Number of electrons in inner energy levels

# of Protons

2

+2

Group 2

Period 4

18 Electrons

20 Protons

400

What is the name of the group each element below belongs to:

Lithium

Iodine

Iron

Strontium

Argon

Alkali Metals

Halogens

Transition Metals

Alkaline Earth Metals

Noble Gas

500

What is the definition and pattern for the following trends?

Atomic Radius

Ionization Energy

Electronegativity

Atomic Radius: distance from the center of the atom to the outermost energy level. Radius increases as you go down a group and decreases as you go across a period.

Ionization Energy: amount of energy to remove an electron. IE decreases as you go down in a group and increases as you go across a period.

Electronegativity: ability to attract electrons when bonded. EN decreases as you go down in a group and increases as you go across a period with the exception of the noble gas group, which don't bond.

Moles / Reactions

100

1 mole = ___________ particles

1 mole = ___________ grams

6.022 x 10²³ particles

Molar Mass

200

Identify the following reactions as S, D, SR, DR, C

Fe + S  -->  FeS

FeS  +  2HCl  --> H₂S  +  FeCl₂

C₅H₁₂  +  8O₂   --> 5CO₂  + 6H₂O 

2Na  + 2H₂O  -->  2NaOH  + H₂

CaCO₃   --> CaO  + CO₂

S

DR

C

SR

D

300

Count the number of each element:

4 (NH₄)₃PO₄

N =

H =

P = 

O = 

N = 12     H = 48    P = 4     O = 16

400

Balance the following reactions:

___ H₂O₂  -->   ___ O₂   +  ___ H₂O

___ KMnO₄ --> ___ K₂O   +   ___ MnO  +  ___O₂

    2 H₂O₂  -->    O₂   +  2 H₂O

4 KMnO₄ -->   2 K₂O   +   4 MnO  +  5 O₂

500

Predict the following products and balance:

H₂O  --->

C₃H₈ + O₂ --->

2 H₂O   --->   2 H₂   +   O₂

C₃H₈ + 5 O₂ --->  3 CO₂   + 4 H₂O

Miscellaneous

100

When Aluminum becomes an ion...

Will it gain or lose e^-?

How many e^-?

What will the charge become?

Lose 

3 electrons 

+3 charge

200

What orbital sublevel corresponds with Alkaline Earth Metals?

What orbital sublevel corresponds with Halogens?

S

P

300

Elements that are most reactive have a valence number that is either _____ or _____ 

1 or 7

400

Using the electronegativity chart, what type of bond will form and what kind of notation will you use?:

Nitrogen and Fluorine

Phosphorus and Sulfur

Lithium and Chlorine

Polar Covalent (Notation = partial charges) 

Non-Polar Covalent (Notation = No Notation)

Ionic (Notation = Actual Ion charges)

500

Draw diagrams for the following elements when bonded:

Aluminum and Bromine

CO₂

Whiteboard work.