Unit 5 Atom and Periodic Table Post Test

Front

What do all elements in group 2 of the periodic table have in common?

Back

Each element is an alkaline earth metal.

Front

Which two elements have similar characteristics?

Back

fluorine and chlorine

Front

Identify Bohr's model of the atom. His model describes the reactivity of an element based on its number of valence electrons.

Back

D

Front

Which atomic model proposed that electrons move in specific orbits around the nucleus of an atom?

Back

Bohr’s atomic model

Front

Which types of orbitals are found in the principal energy level n = 3?

Back

s, p, d

Front

An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

Back

10

Front

Which particles make up the nucleus of an atom?

Back

protons and neutrons

Front

An element has 8 protons and 8 neutrons in its nucleus and 8 electrons revolving around the nucleus. What is the atomic number and atomic mass of this element?

Back

The atomic number is 8 and the atomic mass is 16.

Front

What is a similarity and a difference between isotopes of an element?

Back

same atomic number; different mass number

Front

What is a factor in determining the average atomic mass of an element?

Back

relative abundance of each isotope