Atomic Structure - Test Review

What is the symbol for the element with 6 protons?

• C

• N

• O

• H

How do you calculate the atomic mass of an element?

• By adding the masses of all the isotopes of the element

• By dividing the mass of the element by the number of isotopes

• By taking the weighted average of the masses of all the isotopes of the element

• By taking the average of the masses of all the isotopes of the element

What is the symbol for the element with 8 protons?

• O

• Ne

• He

• Li

How many protons does an atom of carbon have?

• 12

• 6

• 8

• 4

What are isotopes?

• Different species of animals

• Types of weather patterns

• Various forms of energy

• Variants of a particular chemical element

How do you calculate the atomic mass of an element?

• By dividing the mass of the element by the number of isotopes

• By adding the masses of all the isotopes of the element

• By taking the weighted average of the masses of all the isotopes of the element

• By taking the average of the masses of all the isotopes of the element

Ion that loses electrons

• Isotope

• Cation

• Anion

• Nonmetals

Mass of a single atom is measured in

• Milligrams

• Grams

• Pounds

• Atomic mass units

Electrons are arranged in ________ around the nucleus

• Electron cloud

• Energy levels

• Repel

Like charges _______ each other

• Repel

• attract