CHEM 105 Final Review

Unit 1

100

Round the following answer to four significant figures: 509.9499 m

509.9

200

2-5 is the electron arrangement for this element.

N - nitrogen

300

This subatomic particle has a neutral charge.

neutron

400

(T/F) When a piece of ice (density = 0.916 g/mL) is placed in a container of ethanol (density = 0.789 g/mL), the piece of ice will float on top of the ethanol.

False

500

Cottonwood trees can grow to a height of 33.3 yards. What is the tree’s height reported in centimeters? 

3 ft = 1 yard 

2.54 cm = 1 in                   

12 in = 1 ft

3040 cm

Unit 2

100

The bond between nitrogen and fluorine is described as ________ covalent.

polar

200

This reaction results in one compound being converted to two or more compounds.

Decomposition

300

Lowering the temperature, does what to the reaction rate?

lowers it

400

The formula for iron (III) nitrate.

Fe(NO₃)₃

500

Is CF₄ polar or nonpolar?

nonpolar

Unit 3

100

This consists of a solute and solvent.

Solution

200

Sugar is dissolved in water. It does not conduct electricity. What kind of electrolyte is it?

Nonelectrolyte

300

Of these molecules listed: NH₃, HF, HCl, HBr

Which participates in hydrogen bonding?

 NH₃ and HF

400

For a gas dissolved in a liquid, as temperature increases, gas solubility _____________.

decreases

500

I need 30.0 mL of a 2.0 M salt solution. A 5.0 M solution is available. How much of the original solution do I need?

12 mL

Unit 4

100

(T/F) 1-butene has a cis and trans isomer.

False

200

This reaction converts an alkene to an alkane.

Hydrogenation or Halogenation

300

This alcohol gets oxidized to a ketone.

Secondary

400

These alkyl groups contain three carbons and have the same number of carbons and hydrogens.

propyl and isopropyl

500

Glucose (drawn on the board) is classified as aldose or ketose? And how many carbons?

aldose, hexose

Unit 5

100

Ethyl ethanoate contains this functional group.

Ester

200

This reaction produces proteins. It also involves a carboxylic acid and an amine along with the loss of water.

Amidation

300

These are proteins that facilitate chemical reactions and cause a decrease in activation energy.

Enzymes

400

These bonds hold complementary base pairs together in DNA.

Hydrogen bonds

500

This reaction (shown on the board) produces what products? What is the name of this reaction?

glycerol, 3 fatty acid salts, saponification