Atoms and the Periodic Table Review

Question 1

Isotopes of the same element will have the same number of ----, but different numbers of ----.

Accepted Answer

protons, neutrons

Question 2

Which of the following elements do not react with other elements?

Accepted Answer

noble gases

Question 3

Which does not describe a metal?

Accepted Answer

brittle

Question 4

Which elements usually have the same properties?

Accepted Answer

those in a group

Question 5

Chlorine has 17 protons. How many electrons does it have?

Accepted Answer

17

Question 6

Protons and neutrons make up the ------- of an atom.

Accepted Answer

nucleus

Question 7

Each horizontal row in the Periodic Table is called a

Accepted Answer

period

Question 8

Mendeleev arranged his periodic table by

Accepted Answer

atomic mass

Question 9

The ---------are the most highly reactive metals.

Accepted Answer

alkali metals

Question 10

What is the mass number of an atom that has 5 protons, 6 neutrons, and 5 electrons?

Accepted Answer

11

Question 11

Groups of elements are classified based on their similar---------

Accepted Answer

properties

Question 12

The two most abundant elements int universe are

Accepted Answer

hydrogen and helium

Question 13

What is shown on a correctly drawn Lewis Dot structure?

Accepted Answer

chemical symbol and valence electrons

Question 14

What do isotopes always have?

Accepted Answer

same number of protons

Question 15

The particle in the atom with no electrical charge is

Accepted Answer

neutron

Questions 15