Atomic Structure & Periodic Table Mania

Question 1

A column on the periodic table can also be called a ________ or a ___________.

Accepted Answer

group / family

Question 2

Which of the following is an example of a homogeneous mixture?

Accepted Answer

air

Question 3

Elements on the modern periodic table are arranged according to their _________.

Accepted Answer

atomic numbers

Question 4

An atom, as shown on the periodic table, is neutral because it contains equal numbers of

Accepted Answer

protons and electrons

Question 5

How many neutrons does Lithium-7 contain?

Accepted Answer

4

Question 6

Elements in group 17 are called ____________.

Accepted Answer

halogens

Question 7

To become a positive ion, an atom must ___________ .

Accepted Answer

lose electrons

Question 8

Elements that have chemical and physical properities of both metals and nonmetals are _____.

Accepted Answer

metalloids

Question 9

A row on the periodic table is also called a ________.

Accepted Answer

period

Question 10

Which subatomic particles are located inside the nucelus of an atom?

Accepted Answer

protons & neutrons

Question 11

Atoms of the same element that have a different number of neutrons are called ____________.

Accepted Answer

isotopes

Question 12

To become a negative ion, an atom must ____________.

Accepted Answer

gain electrons

Question 13

The sum of the number of protons and neutrons inside the nucleus is called the __________.

Accepted Answer

mass number

Question 14

Valence electrons are located _________.

Accepted Answer

in the outer orbital shell

Question 15

Which of the following is an example of a heterogeneous mixture?

Accepted Answer

sand

Question 16

Group 1 elements are also called ____________.

Accepted Answer

alkali metals

Question 17

The average mass of all the isotopes for a given atom is called ___________.

Accepted Answer

average atomic mass

Question 18

The number of protons an atom contains is identified by the ____ ____ on the periodic table.

Accepted Answer

atomic #

Question 19

Carbon-13 and Carbon-14 are examples of _______________ for the carbon element.

Accepted Answer

isotopes

Question 20

Which listing below shows the proper charges of the subatomic particles?

Accepted Answer

p = +1 n = 0 e = -1

Questions 20