Chemistry--Final Exam Review

Front

What classification do more than two-thirds of the elements belong to?

Back

Metals

Front

How many moles of carbon atoms are in 5g of carbon?

Back

0.42 mol

Front

What is the charge of the nucleus of an aluminum atom and how many electrons surround it?

Back

Charge of +13 and surrounded by 13 electrons.

Front

What happens to a nonmetal atom when it combines with a metal atom?

Back

The nonmetal atom will gain electrons and increase in size.

Front

How do you calculate density?

Back

Density = Mass/Volume.

Front

What is the density of a cube with a volume of 8.0 cm³ and a mass of 21.6 grams?

Back

2.7 g/cm³.

Front

What are the three main types of elements?

Back

Metals, Nonmetals, and Metalloids.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number and properties.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.