➕ Chemistry - Periodic Table

Question 1

gives the number of valence electrons for a neutral atom

Answer 1

group

Question 2

gives the number of energy shells for a neutral atom

Answer 2

period

Question 3

an element that has some properties of both metals and nonmetals

Answer 3

metalloids

Question 4

nitrogen, oxygen, and carbon are essential to life and are what type of elements (metals or nonmetals?)

Answer 4

nonmetals

Question 5

Where are metals found in the periodic table?

Answer 5

To the left of the stepped line.

Question 6

Where are non metals found in the periodic table?

Answer 6

To the right of the stepped line.

Question 7

What are the physical properties of a typical metal?

Answer 7

Good conductor of electricity
Good conductor of heat
Shiny
High density
Malleable
Ductile
Sonorous

Question 8

What is meant by high density?

Answer 8

Heavy for its size

Question 9

What is meant by malleable?

Answer 9

Something can be hammered into a shape

Question 10

What is meant by ductile?

Answer 10

Something that can be stretched into a wire

Question 11

What is meant by sonorous?

Answer 11

Something that makes a ringing sound when hit

Question 12

What are the properties of a typical non-metal?

Answer 12

Poor conductor of electricity
Poor conductor of heat
Dull
Low density
Brittle
Not sonorous

Question 13

What is meant by brittle?

Answer 13

Breaks easily

Question 14

What is meant by low density?

Answer 14

light for its size

Question 15

Which state are all metals apart from 1?

Answer 15

Solid (mercury is liquid)

Question 16

What do we call elements that are near the stepped line on the periodic table?

Answer 16

Metalloids

Question 17

Compare the melting points of metals and non metals.

Answer 17

Most metals have high melingl points
Most non metals have low melting points

Question 18

What is meant by ‘chemical properties’ of an element?

Answer 18

How well it reacts with other elements

Question 19

What do we call columns of the periodic table?

Answer 19

Groups

Question 20

What do we call rows of the periodic table?

Answer 20

Periods

Question 21

When we look down a group or across a period there are _______ in properties such as melting point, boiling point and density.

Answer 21

patterns

Question 22

By looking at patterns down a group or across a period of the periodic table we can make ________ about unknown elements in that group

Answer 22

predictions

Question 23

What are the group1 elements also known as?

Answer 23

The alkali metals

Question 24

Name the group 1 elements

Answer 24

Lithium
Sodium
Potassium
Rubidium
Cesium
Francium

Question 25

Describe the chemical properties of the group 1 elements.

Answer 25

They are reactive metals

Question 26

Describe the physical properties of the group 1 elements

Answer 26

Good conductors of heat/electricity Shiny when cut

Question 27

What happens to the melting/boiling point of the group 1 metals as you move down the group?

Answer 27

It decreases

Question 28

What happens to the reactivity of the group 1 elements as you move down the group?

Answer 28

They become more reactive

Question 29

By what name are the elements of group 7 sometimes called?

Answer 29

The halogens

Question 30

Name all of the elements of group 7

Answer 30

Fluorine Chlorine Bromine Iodine Astatine

Question 31

Give some of the physical properties of the group 7 elements.

Answer 31

Non metals so: Low melting/boiling points Do not conduct electricity Iodine is brittle

Question 32

What happens to the melting point of the group 7 elements as you move down the group?

Answer 32

It increases

Question 33

What happens to the color of the group 7 elements as you move down the group?

Answer 33

They get darker

Question 34

What happens to the reactivity of the group 7 elements as you move down the group?

Answer 34

The elements become less reactive as you move down the group

Question 35

By what other name are the group 8 elements known?

Answer 35

The noble gases

Question 36

Identify the noble gases

Answer 36

Helium Neon Argon Krypton Xenon Radon

Question 37

What is the state of the group 8 elements?

Answer 37

Colorless gases

Question 38

The melting/boiling points of the group 8 elements are very ____

Answer 38

low

Question 39

What happens when you pass an electric current through the group 8 elements?

Answer 39

They glow brightly

Question 40

Neon gas is used in...

Answer 40

fluorescent signs

Question 41

Helium gas is used in...

Answer 41

balloons

Question 42

Which group 8 element has a lower density than air?

Answer 42

helium

Question 43

The group 8 elements are extremely unreactive so we say that they are...

Answer 43

stable

Question 44

Although they are unreactive, reactivity increases as you move _____ the group 8 elements.

Answer 44

down