Chemistry

Bonding

100

Bonding between two different nonmetals

Polar Covlant

200

The number of electrons that a sodium atom transfers when bonding with Iodine

ONE

300

This is the number of lone pairs surrounding oxygen in Lewis structure of water:

TWO

400

How many electrons are shared between two atoms of nitrogen?

6

500

The bond type and molecular polarity of CO₂

polar bonds; nonpolar molecule

Reactions

100

The type of reaction represented:   

Zn + HCl --->  ZnCl₂ + H₂

Single replacement

200

How many reactants are there in a decomposition reaction?

1

300

When this reaction is balanced, the coefficient of HCl is 

__Fe  + ___HCl ---->   FeCl₂ +  H₂

2

400

Convert 13 grams of water into moles:

0.72 moles

500

How many moles of water are produced when 6 moles of oxygen are produced?

2 H₂O₂ ---->  2H₂O  +  O₂

12

Ions

100

When sulfur becomes an ion, it _____ 2 electrons. 

gains

200

The number of total electrons in N^3-

10

300

The number of valence electrons in Al ⁺³

8

400

A metal bonds with oxygen in this ratio:

XO

From what group on the periodic table is element x?

Group 2

500

Ionic substances are only good conductors as liquids. This is because:

they have free flowing ions

Atomic Structure

100

Isotopes contain atoms with the same ________ but different ________

protons; neutrons

or

atomic number; mass number

200

How many neutrons are in this species:

¹⁸ O ^2-

10

300

The ____________ model determined that electrons are found in orbitals surrounding a positive nucleus

wave mechanical

or  cloud mechanical

or quantum mechanical

400

Identify an element that is chemically similar to aluminum?

Boron or gallium or indium or thallium 

500

Which isotope is the most abundant isotope of carbon-  C-12   C-13  or C-14?

Explain

C-12 since the atomic mass is closest to 12

Periodic Table of Elements

100

What do you call the horizontal rows on the Periodic Table of Elements?

Periods

200

As you move from top to bottom of a group, the trend in electronegativity

decreases

300

In terms of atomic structure, why does iodine have a smaller ionization energy than bromine?

Iodine has more electron shells

400

Identify a diatomic element

Bromine or iodine or chlorine or hydrogen or oxygen or fluorine or nitrogen

500

Explain, in terms of atomic structure,  why Sr has a smaller radius than Rb

Sr has a greater nuclear charge given that it has an additional proton in it's nucleus to pull on the electron shells.