IMFs & Bonds
Naming & Writing Formulas & Other things
Molecular Structure
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100

How many electrons are involved in a double bond between carbon and oxygen?

4 electrons

100

What is the chemical formula for magnesium bromide?

MgBr2

100

What shape would a molecule have if it's center atom has 5 bonding electron pairs and no lone pairs?

Trigonal bipyramidal


100

Will the following reaction occur?

Al + CaCl --> 

No. Aluminum is lower on the activity series than calcium.

100

What city are the 2024 Olympics being hosted in?

Paris, France

200

List the three primary IMFs in order from strongest to weakest.

Hydrogen Bonding > Dipole-Diploe > London Dispersion

200

What is the name of this compound?

S2F10

Disulfur decafluoride

200

Draw the Lewis Dot structure for ammonia (NH3)


200

Write the balanced equation with products for the following reaction:

Cl+ CaI2 --> ______

Cl+ CaI2 -->CaCl2 + I2

200

What was the first movie to win the Oscar for best animated film?

Shrek (2001)

300

In the compound HCN, what type of bond exists between carbon and nitrogen?

A triple covalent bond (non-polar)

300

What is the name of this compound:

CuOH

Copper (I) hydroxide
300

Is formaldehyde (CH2O) as a molecule polar or non-polar? Why?

Polar. C=O bond is polar and structure is asymmetric



300

What are the products of the following reaction? (also balance the equation)

C3H8 + O2 -->  


C3H8 + 5O2 -->  3CO2 + 4H2O

Combustion

300

Which element has a larger 1st ionization energy, germanium or phosphorus?

Phosphorus

400

Between acetone (C3H6O) and propane (C3H8), which should have a higher boiling point and why? 

Acetone will have a higher boiling point than propane, because acetone, as a polar molecule, has dipole-dipole IMFs, while propane, a non-polar molecule, just has dispersion IMFs. Stronger IMFs create a higher boiling point.

400

Explain the law of definite proportions.

A given chemical compound always contains its component elements in a fixed ratio and does not depend on its source and method of preparation

400

Draw the Lewis structure of XeF4, what is its molecular structure? Is the molecule polar?

Square planar, non-polar

400

Balance the following equation:

_C3H8O + _O2 --> _CO2 + _H2O

2C3H8O + 9O2 --> 6CO2 + 8H2O

400

Describe the periodic trend for atomic radius and why it follows the pattern it does.

Across a period atomic radius decreases due to a larger positive nucleus pulling in electrons. Down a column atomic radius increases due to electrons occupying higher energy levels.

500

Explain on an atomic scale, the difference between non-polar covalent, polar covalent, and ionic bonds. What is happening to the electrons?

Points given by Dace's discretion

500

You have 15g each of two compounds containing just oxygen and sulfur. The first compound contains 7.5g of sulfur and the second compound contains 6g of sulfur. Show how this data illustrates the law of multiple proportions.

7.5g S -> 7.5g O     6g S -> 9gO

7.5gS/7.5=7.5gO/7.5   6gS/6=9gO/6

1g S = 1g O             1g S = 1.5g O

1.5gO/1gO=3/2

500

Draw the Lewis Dot structure for C6H6, including any resonance structures

(hint: the carbons want to be similar to each other bond-wise)


500

Write the balanced chemical equation for the reaction between potassium chromate & silver nitrate. Will the reaction occur? If so, what is the precipitate?

K2CrO4(aq) + 2AgNO3(aq) --> Ag2CrO4(s) + 2KNO3(aq)

The reaction will occur and silver chromate is the precipitate.

500

What is the term for the scientific study of bones?

Osteology. From the Greek ὀστέον (ostéon) meaning 'bones', and λόγος (logos) meaning 'study.

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