Semester Exam Jeopardy

Intro to Chemistry

100

Is burning a gas a chemical change or a physical change?

Chemical

100

What type of observation is "There are 16 trees in the courtyard"

Quantitative

100

What is an example of non-matter?

Many answers

100

Which field of science studies the composition and structure of matter?

Chemistry

100

Substances which cannot be further broken apart by ordinary chemical means are

elements

Atomic Structure

100

All atoms of the same element have the same what?

Atomic number/number of protons

100

What subatomic particle is NOT found in the nucleus?

Electrons

100

Unreactive atoms have ______ valence electrons in their outermost energy levels.

8

100

How many protons does aluminum have?

13

100

What is the atomic number of magnesium?

12

Nuclear Chemistry

100

How does an unstable nucleus become stable?

Emitting radiation

100

Which force of nature is responsible for holding the nucleus together and is the sole reason for the magnitude of energy released when the nucleus is altered?

Strong force

100

When radon-226 (atomic number 86) decays by emitting an alpha particle, it becomes

Polonium-222

100

Many of the US Naval aircraft carriers are fueled by nuclear reactors. What process is utilized in a nuclear reactor?

Fission

100

Which of the following describes the trend that is characteristic of a half life decay?

Decrease exponentially

Periodicity

100

The idea of arranging the elements on the periodic table on the basis of similar chemical and physical properties and according to their atomic mass is attributed to

Mendeleev

100

The group of soft, silvery active metals, all of which have 1 valence electron in an s orbital, are known as the:

Alkali metals

100

The transition elements are all what type of elements?

Metals

100

The principle that states that the physical and chemical properties of the elements are periodic functions of their atomic numbers is known as:

Periodic Law

100

The elements that border the zigzag line on the periodic table are called

Metalloids

Nomenclature/Bonding

100

How many valence electrons does Aluminum have?

3

100

What is the charge on the cation in the ionic compound sodium sulfide?

+1

100

What is the VSEPR theory used to predict?

Molecular Shape

100

What is the name for the ion: NH4+?

Ammonium

100

What is the correct formula for the molecule dinitrogen pentoxide?

N₂O₅