Atoms and Periodic Table Review

Question 1

How many electrons does the 3rd electron shell hold?

Accepted Answer

8

Question 2

The rows of elements are called

Accepted Answer

periods

Question 3

Which of these metals is not a transition metal?

Accepted Answer

gallium

Question 4

Which of these elements is a liquid at room temperature?

Accepted Answer

bromine, mercury

Question 5

This particle has no charge but still adds atomic mass to an atom.

Accepted Answer

neutron

Question 6

The vertical columns are called ____________ and there are _____ of them.

Accepted Answer

families, 18

Question 7

Semi-metals are the elements that touch the dark diagonal line EXCEPT:

Accepted Answer

aluminum

Question 8

The number of _________ determines what element an atom is.

Accepted Answer

protons

Question 9

Why is group/family 18 called the "noble" or "inert gases"?

Accepted Answer

they do not react, their electron shells are full

Question 10

A proton has a...

Accepted Answer

positive charge

Question 11

Which is not a common property of nonmetals?

Accepted Answer

shiny

Question 12

Which is not a force that holds an atom together?

Accepted Answer

the infinite force

Question 13

Which is not an example of an element?

Accepted Answer

salt

Question 14

Which is the smallest of the parts of an atom?

Accepted Answer

electron

Question 15

The periodic table is organised into four areas: metals, nonmetals, semi-metals and...

Accepted Answer

inert gases, noble gases

Question 16

Elements in the same family usually have:

Accepted Answer

similar properties, the same number of valence electrons

Question 17

This subatomic particle is not inside the nucleus.

Accepted Answer

electron

Question 18

Why doesn't an atom have a charge?

Accepted Answer

The charges cancel each other out.

Question 19

Which is not a common property of metals?

Accepted Answer

brittle

Question 20

The atomic symbol of gold is:

Accepted Answer

Au

Questions 20