AP Chemistry Practice Test

Which subatomic particle determines the reactivity of a group of elements on the periodic table

• number of protons

• number of electrons

• number of neutrons

• number of valence electrons

A Lewis Dot diagram of Phosphorus (P) would show how many electrons?

• 3

• 5

• 8

• 15

Who invented the Periodic Table?

• Gregor Mendel

• Dmitri Medeleev

• Henry Moseley

• Michelle Goode

Which of the following elements is a metalloid?

• Cesium (Cs)

• Krypton (Kr)

• Arsenic (As)

• Plutonium (Pu)

What is the study of matter and how it changes?

• Biology

• Physics

• Chemistry

• Geology

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A Bohr Model of Radium (Ra) would have how many electron orbitals/shells?

• 2

• 5

• 6

• 7

Which element belongs to the least reactive group of elements?

• Neon (Ne)

• Silver (Ag)

• Carbon (C)

• Potassium (K)

An element is identify by

• its number of neutrons

• its number of protons

• its atomic mass

• the type of charge

Which best explains how the atomic size of the elements is arranged on the periodic table.

• The atomic size decreases from left to right and decreases from top to bottom.

• The atomic size increases from left to right and increases from top to bottom

• The atomic size decreases from left to right and increases from top to bottom.

• The atomic size increases from left to right and decreases from top to bottom.

Properties such as magnetism, luster, and malleablity have been used to group together which category of elements on the periodic table?

• metals

• nonmetals

• metalloids

• noble gases

Tags

NGSS.MS-PS2-3