Chemistry Exam Review #2

Front

What is the smallest particle of an element that retains that element's properties?

Back

Atom

Front

How many significant figures are in the measurement 0.0034 kg?

Back

Two

Front

What is one mole of anything equivalent to?

Back

6.02 x 10^23

Front

How are three electrons distributed in three 2p orbitals?

Back

One electron in each orbital.

Front

What is the formula for aluminum oxide?

Back

Al₂O₃

Front

Define an atom.

Back

The basic unit of a chemical element.

Front

What is a mole in chemistry?

Back

A unit that measures the amount of substance, equivalent to 6.02 x 10^23 particles.

Front

What are significant figures?

Back

Digits in a number that contribute to its precision.

Front

What is the electron configuration for oxygen?

Back

1s² 2s² 2p⁴

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.