CP Chemistry Unit 2 Test (The Atom and the Mole)

Indicate whether the statement is true or false. An element’s molar mass is equivalent to the atomic number of the element.

Indicate whether the statement is true or false. In a neutral atom, the number of protons is equal to the number of neutrons.

Indicate whether the statement is true or false. In the notation 107/47 Ag, 107 represents the atomic number and 47 represents the atomic mass of silver.

Indicate whether the statement is true or false. Greek philosophers thought that matter was composed of four elements: air, earth, fire, and water.

Indicate whether the statement is true or false. Isotopes are forms of an element that have the same number of protons but a different number of electrons.

Find the formula for the compound that contains 72.40% iron and 27.60% oxygen.

How many electrons are in a neutral atom of sodium?

How many neutrons are in an atom of chlorine?

How many moles are present in 21.2 g hydrochloric acid, HCl?

What is the molar mass of Ca(OH)2?