Unit 6 Review: Atomic Structure & Periodic Table

Question 1

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

Accepted Answer

protons & neutrons

Question 2

What # of subatomic particles can not change without changing the element?

Accepted Answer

protons

Question 3

What is the mass of an atom of sodium if it has 2 more neutrons than protons?

Accepted Answer

24

Question 4

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

Accepted Answer

period

Question 5

Elements in group 17 are called ____________.

Accepted Answer

halogens

Question 6

Who organized the first periodic table based the elements' atomic masses?

Accepted Answer

Mendelev

Question 7

What is the atomic mass of the element shown?

Accepted Answer

48

Question 8

What is the average atomic mass of aluminum?

Accepted Answer

26.982

Question 9

Group 2 elements are also called ____________.

Accepted Answer

alkaline earth metals

Question 10

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

Accepted Answer

isotopes

Question 11

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

Accepted Answer

protons and electrons

Question 12

Which subatomic particle has a neutral charge?

Accepted Answer

neutron

Question 13

Which of the following is the atomic mass?

Accepted Answer

D

Question 14

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

Accepted Answer

mass number

Question 15

What element is in period 3, group 13?

Accepted Answer

aluminum

Question 16

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

Accepted Answer

isotopes

Question 17

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

Accepted Answer

average atomic mass

Question 18

To become a positive ion (have a positive charge), an atom must ___________ .

Accepted Answer

lose electrons

Question 19

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

Accepted Answer

group

Question 20

What element is located in period 4, group 5?

Accepted Answer

vanadium

Question 21

Who is the host of the Crash Course Chemistry videos we watched for this unit?

Accepted Answer

Hank Green

Question 22

All of the following elements are in the same family, except:

Accepted Answer

Rn

Question 23

What element is represented by the symbol "Hg"?

Accepted Answer

Mercury

Question 24

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

Accepted Answer

atomic number

Question 25

What family on the periodic table does Hydrogen belong to?

Accepted Answer

nonmetals

Unit 6 Review: Atomic Structure & Periodic Table

Questions 25

Unit 6 Review: Atomic Structure & Periodic Table

Questions 25