The Periodic Table

Question 1

What is an element?

Answer 1

A pure substance that cannot be broken down into simpler substances.

Question 2

What is a period?

Answer 2

A row of electrons in the periodic table.

Question 3

What is a group?

Answer 3

A column of elements in the periodic table with similar properties?

Question 4

What are the three categories that elements that can broken up into?

Answer 4

Metals, Non-Metals and Metalloids

Question 5

What are the properties of metals?

Answer 5

Solid state
Shiny lustre
Generally malleable 
Conductors
Less than 4 valence electrons

Question 6

What are the properties of non-metals?

Answer 6

Solid, liquid or gas state
Dull lustre
Brittle if solid
Insulators
More than 4 valence electrons

Question 7

What does the atomic number tell you?

Answer 7

The number of protons (and electrons)

Defines what element it is (because of the number of protons)

Question 8

What does the atomic mass tell you?

Answer 8

The average number of neutrons in an element.

Question 9

How do you find the number of neutrons?

Answer 9

Atomic mass - Atomic #

Question 10

What is an atomic mass?

Answer 10

The average mass of an element

Measured in atomic mass units (amu)

Question 11

What are isotopes?

Answer 11

A form of an element that has a different number of neutrons